Customized Options
Article 12/05/2024
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allow_alter_system
Attribute
Value
Category
Customized Options
Description
Enable/Disable allow alter system command.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
allow_alter_system
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_level
Attribute
Value
Category
Customized Options
Description
Log level for the plan.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,debug,info,notice,warning,log
Parameter type
dynamic
Documentation
auto_explain.log_level
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_settings
Attribute
Value
Category
Customized Options
Description
Log modified configuration parameters affecting query planning.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_settings
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.log_wal
Attribute
Value
Category
Customized Options
Description
Log WAL usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_wal
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5,scram-sha-256
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,amcheck,anon,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,oracle_fdw,orafce,pageinspect,pg_buffercache,pg_cron,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,postgres_protobuf,semver,session_variable,sslinfo,tablefunc,tds_fdw,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure_storage.allow_network_access
Attribute
Value
Category
Customized Options
Description
Allow accessing data from blob storage in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure_storage.blob_block_size_mb
Attribute
Value
Category
Customized Options
Description
Blob block size in megabytes for blob_put in extension azure_storage.
Data type
integer
Default value
Depends on resources (vCores, RAM, or disk space) allocated to the server.
Allowed values
1024
Parameter type
read-only
Documentation
azure_storage.blob_block_size_mb
Azure-specific notes
The default value for the azure_storage.blob_block_size_mb server parameter is calculated when you provision the instance of Azure Database for PostgreSQL flexible server, based on the product name that you select for its compute. Any subsequent changes of product selection to the compute that supports the flexible server won't have any effect on the default value for the azure_storage.blob_block_size_mb server parameter of that instance.
As of today, if you change the product assigned to an instance, you won't be able to adjust the value of azure_storage.blob_block_size_mb parameter because the parameter is declared as read-only.
The formula used to compute the value of azure_storage.blob_block_size_mb is MIN(3072, MAX(128, memoryGiB * 32)).
Based on the previous formula, the following table lists the values this server parameter would be set to depending on the amount of memory provisioned:
Memory size
azure_storage.blob_block_size_mb
2 GiB
128 MiB
4 GiB
128 MiB
8 GiB
256 MiB
16 GiB
512 MiB
32 GiB
1024 MiB
48 GiB
1536 MiB
64 GiB
2048 MiB
80 GiB
2560 MiB
128 GiB
3072 MiB
160 GiB
3072 MiB
192 GiB
3072 MiB
256 GiB
3072 MiB
384 GiB
3072 MiB
432 GiB
3072 MiB
672 GiB
3072 MiB
azure_storage.public_account_access
Attribute
Value
Category
Customized Options
Description
Allow all users to access data from public storage accounts in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
commit_timestamp_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of memory to use to cache the contents of pg_commit_ts. Unit is 8kb.
Data type
integer
Default value
1024
Allowed values
1024
Parameter type
read-only
Documentation
commit_timestamp_buffers
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
event_triggers
Attribute
Value
Category
Customized Options
Description
Enable/Disable event triggers for debugging purpose.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
event_triggers
index_tuning.analysis_interval
Attribute
Value
Category
Customized Options
Description
Sets the frequency at which each index optimization session is triggered when index_tuning.mode is set to 'REPORT'.
Data type
integer
Default value
720
Allowed values
60-10080
Parameter type
dynamic
Documentation
index_tuning.analysis_interval
index_tuning.max_columns_per_index
Attribute
Value
Category
Customized Options
Description
Maximum number of columns that can be part of the index key for any recommended index.
Data type
integer
Default value
2
Allowed values
1-10
Parameter type
dynamic
Documentation
index_tuning.max_columns_per_index
index_tuning.max_index_count
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each database during one optimization session.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_index_count
index_tuning.max_indexes_per_table
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each table.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_indexes_per_table
index_tuning.max_queries_per_database
Attribute
Value
Category
Customized Options
Description
Number of slowest queries per database for which indexes can be recommended.
Data type
integer
Default value
25
Allowed values
5-100
Parameter type
dynamic
Documentation
index_tuning.max_queries_per_database
index_tuning.max_regression_factor
Attribute
Value
Category
Customized Options
Description
Acceptable regression introduced by a recommended index on any of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.1
Allowed values
0.05-0.2
Parameter type
dynamic
Documentation
index_tuning.max_regression_factor
index_tuning.max_total_size_factor
Attribute
Value
Category
Customized Options
Description
Maximum total size, in percentage of total disk space, that all recommended indexes for any given database can use.
Data type
numeric
Default value
0.1
Allowed values
0-1.0
Parameter type
dynamic
Documentation
index_tuning.max_total_size_factor
index_tuning.min_improvement_factor
Attribute
Value
Category
Customized Options
Description
Cost improvement that a recommended index must provide to at least one of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.2
Allowed values
0-20.0
Parameter type
dynamic
Documentation
index_tuning.min_improvement_factor
index_tuning.mode
Attribute
Value
Category
Customized Options
Description
Configures index optimization as disabled ('OFF') or enabled to only emit recommendation. Requires Query Store to be enabled by setting pg_qs.query_capture_mode to 'TOP' or 'ALL'.
Data type
enumeration
Default value
off
Allowed values
off,report
Parameter type
dynamic
Documentation
index_tuning.mode
index_tuning.unused_dml_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average DML operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_dml_per_table
index_tuning.unused_min_period
Attribute
Value
Category
Customized Options
Description
Minimum number of days the index has not been used, based on system statistics, so that it is considered for dropping.
Data type
integer
Default value
35
Allowed values
30-720
Parameter type
dynamic
Documentation
index_tuning.unused_min_period
index_tuning.unused_reads_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average read operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_reads_per_table
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
multixact_member_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of shared memory to use to cache the contents of pg_multixact/members. Unit is 8kb.
Data type
integer
Default value
32
Allowed values
32
Parameter type
read-only
Documentation
multixact_member_buffers
multixact_offset_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of shared memory to use to cache the contents of pg_multixact/offsets. Unit is 8kb.
Data type
integer
Default value
16
Allowed values
16
Parameter type
read-only
Documentation
multixact_offset_buffers
notify_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of shared memory to use to cache the contents of pg_notify. Unit is 8kb.
Data type
integer
Default value
16
Allowed values
16
Parameter type
read-only
Documentation
notify_buffers
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers
serializable_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of shared memory to use to cache the contents of pg_serial. Unit is 8kb.
Data type
integer
Default value
32
Allowed values
32
Parameter type
read-only
Documentation
serializable_buffers
subtransaction_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of shared memory to use to cache the contents of pg_subtrans. Unit is 8kb.
Data type
integer
Default value
1024
Allowed values
1024
Parameter type
read-only
Documentation
subtransaction_buffers
sync_replication_slots
Attribute
Value
Category
Customized Options
Description
Enables physical standby to synchronize logical failover slots from the primary server.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
sync_replication_slots
transaction_buffers
Attribute
Value
Category
Customized Options
Description
Specifies the amount of shared memory to use to cache the contents of pg_xact. Unit is 8kb.
Data type
integer
Default value
1024
Allowed values
1024
Parameter type
read-only
Documentation
transaction_buffers
transaction_timeout
Attribute
Value
Category
Customized Options
Description
Sets the maximum allowed duration (in milliseconds) of any transcation in a session. 0 turns this off.
Data type
integer
Default value
0
Allowed values
0-2147483647
Parameter type
dynamic
Documentation
transaction_timeout
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_level
Attribute
Value
Category
Customized Options
Description
Log level for the plan.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,debug,info,notice,warning,log
Parameter type
dynamic
Documentation
auto_explain.log_level
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_settings
Attribute
Value
Category
Customized Options
Description
Log modified configuration parameters affecting query planning.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_settings
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.log_wal
Attribute
Value
Category
Customized Options
Description
Log WAL usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_wal
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5,scram-sha-256
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,age,amcheck,anon,azure_ai,azure_storage,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,oracle_fdw,orafce,pageinspect,pg_buffercache,pg_cron,pg_diskann,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,postgres_protobuf,semver,session_variable,sslinfo,tablefunc,tds_fdw,timescaledb,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure_storage.allow_network_access
Attribute
Value
Category
Customized Options
Description
Allow accessing data from blob storage in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure_storage.blob_block_size_mb
Attribute
Value
Category
Customized Options
Description
Blob block size in megabytes for blob_put in extension azure_storage.
Data type
integer
Default value
Depends on resources (vCores, RAM, or disk space) allocated to the server.
Allowed values
1024
Parameter type
read-only
Documentation
azure_storage.blob_block_size_mb
Azure-specific notes
The default value for the azure_storage.blob_block_size_mb server parameter is calculated when you provision the instance of Azure Database for PostgreSQL flexible server, based on the product name that you select for its compute. Any subsequent changes of product selection to the compute that supports the flexible server won't have any effect on the default value for the azure_storage.blob_block_size_mb server parameter of that instance.
As of today, if you change the product assigned to an instance, you won't be able to adjust the value of azure_storage.blob_block_size_mb parameter because the parameter is declared as read-only.
The formula used to compute the value of azure_storage.blob_block_size_mb is MIN(3072, MAX(128, memoryGiB * 32)).
Based on the previous formula, the following table lists the values this server parameter would be set to depending on the amount of memory provisioned:
Memory size
azure_storage.blob_block_size_mb
2 GiB
128 MiB
4 GiB
128 MiB
8 GiB
256 MiB
16 GiB
512 MiB
32 GiB
1024 MiB
48 GiB
1536 MiB
64 GiB
2048 MiB
80 GiB
2560 MiB
128 GiB
3072 MiB
160 GiB
3072 MiB
192 GiB
3072 MiB
256 GiB
3072 MiB
384 GiB
3072 MiB
432 GiB
3072 MiB
672 GiB
3072 MiB
azure_storage.public_account_access
Attribute
Value
Category
Customized Options
Description
Allow all users to access data from public storage accounts in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
index_tuning.analysis_interval
Attribute
Value
Category
Customized Options
Description
Sets the frequency at which each index optimization session is triggered when index_tuning.mode is set to 'REPORT'.
Data type
integer
Default value
720
Allowed values
60-10080
Parameter type
dynamic
Documentation
index_tuning.analysis_interval
index_tuning.max_columns_per_index
Attribute
Value
Category
Customized Options
Description
Maximum number of columns that can be part of the index key for any recommended index.
Data type
integer
Default value
2
Allowed values
1-10
Parameter type
dynamic
Documentation
index_tuning.max_columns_per_index
index_tuning.max_index_count
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each database during one optimization session.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_index_count
index_tuning.max_indexes_per_table
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each table.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_indexes_per_table
index_tuning.max_queries_per_database
Attribute
Value
Category
Customized Options
Description
Number of slowest queries per database for which indexes can be recommended.
Data type
integer
Default value
25
Allowed values
5-100
Parameter type
dynamic
Documentation
index_tuning.max_queries_per_database
index_tuning.max_regression_factor
Attribute
Value
Category
Customized Options
Description
Acceptable regression introduced by a recommended index on any of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.1
Allowed values
0.05-0.2
Parameter type
dynamic
Documentation
index_tuning.max_regression_factor
index_tuning.max_total_size_factor
Attribute
Value
Category
Customized Options
Description
Maximum total size, in percentage of total disk space, that all recommended indexes for any given database can use.
Data type
numeric
Default value
0.1
Allowed values
0-1.0
Parameter type
dynamic
Documentation
index_tuning.max_total_size_factor
index_tuning.min_improvement_factor
Attribute
Value
Category
Customized Options
Description
Cost improvement that a recommended index must provide to at least one of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.2
Allowed values
0-20.0
Parameter type
dynamic
Documentation
index_tuning.min_improvement_factor
index_tuning.mode
Attribute
Value
Category
Customized Options
Description
Configures index optimization as disabled ('OFF') or enabled to only emit recommendation. Requires Query Store to be enabled by setting pg_qs.query_capture_mode to 'TOP' or 'ALL'.
Data type
enumeration
Default value
off
Allowed values
off,report
Parameter type
dynamic
Documentation
index_tuning.mode
index_tuning.unused_dml_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average DML operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_dml_per_table
index_tuning.unused_min_period
Attribute
Value
Category
Customized Options
Description
Minimum number of days the index has not been used, based on system statistics, so that it is considered for dropping.
Data type
integer
Default value
35
Allowed values
30-720
Parameter type
dynamic
Documentation
index_tuning.unused_min_period
index_tuning.unused_reads_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average read operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_reads_per_table
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,-]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_level
Attribute
Value
Category
Customized Options
Description
Log level for the plan.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,debug,info,notice,warning,log
Parameter type
dynamic
Documentation
auto_explain.log_level
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_settings
Attribute
Value
Category
Customized Options
Description
Log modified configuration parameters affecting query planning.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_settings
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.log_wal
Attribute
Value
Category
Customized Options
Description
Log WAL usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_wal
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5,scram-sha-256
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,age,amcheck,anon,azure_ai,azure_storage,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,oracle_fdw,orafce,pageinspect,pg_buffercache,pg_cron,pg_diskann,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrouting,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,postgres_protobuf,semver,session_variable,sslinfo,tablefunc,tds_fdw,timescaledb,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure_storage.allow_network_access
Attribute
Value
Category
Customized Options
Description
Allow accessing data from blob storage in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure_storage.blob_block_size_mb
Attribute
Value
Category
Customized Options
Description
Blob block size in megabytes for blob_put in extension azure_storage.
Data type
integer
Default value
Depends on resources (vCores, RAM, or disk space) allocated to the server.
Allowed values
1024
Parameter type
read-only
Documentation
azure_storage.blob_block_size_mb
Azure-specific notes
The default value for the azure_storage.blob_block_size_mb server parameter is calculated when you provision the instance of Azure Database for PostgreSQL flexible server, based on the product name that you select for its compute. Any subsequent changes of product selection to the compute that supports the flexible server won't have any effect on the default value for the azure_storage.blob_block_size_mb server parameter of that instance.
As of today, if you change the product assigned to an instance, you won't be able to adjust the value of azure_storage.blob_block_size_mb parameter because the parameter is declared as read-only.
The formula used to compute the value of azure_storage.blob_block_size_mb is MIN(3072, MAX(128, memoryGiB * 32)).
Based on the previous formula, the following table lists the values this server parameter would be set to depending on the amount of memory provisioned:
Memory size
azure_storage.blob_block_size_mb
2 GiB
128 MiB
4 GiB
128 MiB
8 GiB
256 MiB
16 GiB
512 MiB
32 GiB
1024 MiB
48 GiB
1536 MiB
64 GiB
2048 MiB
80 GiB
2560 MiB
128 GiB
3072 MiB
160 GiB
3072 MiB
192 GiB
3072 MiB
256 GiB
3072 MiB
384 GiB
3072 MiB
432 GiB
3072 MiB
672 GiB
3072 MiB
azure_storage.public_account_access
Attribute
Value
Category
Customized Options
Description
Allow all users to access data from public storage accounts in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
index_tuning.analysis_interval
Attribute
Value
Category
Customized Options
Description
Sets the frequency at which each index optimization session is triggered when index_tuning.mode is set to 'REPORT'.
Data type
integer
Default value
720
Allowed values
60-10080
Parameter type
dynamic
Documentation
index_tuning.analysis_interval
index_tuning.max_columns_per_index
Attribute
Value
Category
Customized Options
Description
Maximum number of columns that can be part of the index key for any recommended index.
Data type
integer
Default value
2
Allowed values
1-10
Parameter type
dynamic
Documentation
index_tuning.max_columns_per_index
index_tuning.max_index_count
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each database during one optimization session.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_index_count
index_tuning.max_indexes_per_table
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each table.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_indexes_per_table
index_tuning.max_queries_per_database
Attribute
Value
Category
Customized Options
Description
Number of slowest queries per database for which indexes can be recommended.
Data type
integer
Default value
25
Allowed values
5-100
Parameter type
dynamic
Documentation
index_tuning.max_queries_per_database
index_tuning.max_regression_factor
Attribute
Value
Category
Customized Options
Description
Acceptable regression introduced by a recommended index on any of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.1
Allowed values
0.05-0.2
Parameter type
dynamic
Documentation
index_tuning.max_regression_factor
index_tuning.max_total_size_factor
Attribute
Value
Category
Customized Options
Description
Maximum total size, in percentage of total disk space, that all recommended indexes for any given database can use.
Data type
numeric
Default value
0.1
Allowed values
0-1.0
Parameter type
dynamic
Documentation
index_tuning.max_total_size_factor
index_tuning.min_improvement_factor
Attribute
Value
Category
Customized Options
Description
Cost improvement that a recommended index must provide to at least one of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.2
Allowed values
0-20.0
Parameter type
dynamic
Documentation
index_tuning.min_improvement_factor
index_tuning.mode
Attribute
Value
Category
Customized Options
Description
Configures index optimization as disabled ('OFF') or enabled to only emit recommendation. Requires Query Store to be enabled by setting pg_qs.query_capture_mode to 'TOP' or 'ALL'.
Data type
enumeration
Default value
off
Allowed values
off,report
Parameter type
dynamic
Documentation
index_tuning.mode
index_tuning.unused_dml_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average DML operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_dml_per_table
index_tuning.unused_min_period
Attribute
Value
Category
Customized Options
Description
Minimum number of days the index has not been used, based on system statistics, so that it is considered for dropping.
Data type
integer
Default value
35
Allowed values
30-720
Parameter type
dynamic
Documentation
index_tuning.unused_min_period
index_tuning.unused_reads_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average read operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_reads_per_table
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,-]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_level
Attribute
Value
Category
Customized Options
Description
Log level for the plan.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,debug,info,notice,warning,log
Parameter type
dynamic
Documentation
auto_explain.log_level
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_settings
Attribute
Value
Category
Customized Options
Description
Log modified configuration parameters affecting query planning.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_settings
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.log_wal
Attribute
Value
Category
Customized Options
Description
Log WAL usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_wal
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5,scram-sha-256
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,age,amcheck,anon,azure_ai,azure_storage,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,oracle_fdw,orafce,pageinspect,pg_buffercache,pg_cron,pg_diskann,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrouting,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,postgres_protobuf,semver,session_variable,sslinfo,tablefunc,tds_fdw,timescaledb,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure_storage.allow_network_access
Attribute
Value
Category
Customized Options
Description
Allow accessing data from blob storage in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure_storage.blob_block_size_mb
Attribute
Value
Category
Customized Options
Description
Blob block size in megabytes for blob_put in extension azure_storage.
Data type
integer
Default value
Depends on resources (vCores, RAM, or disk space) allocated to the server.
Allowed values
1024
Parameter type
read-only
Documentation
azure_storage.blob_block_size_mb
Azure-specific notes
The default value for the azure_storage.blob_block_size_mb server parameter is calculated when you provision the instance of Azure Database for PostgreSQL flexible server, based on the product name that you select for its compute. Any subsequent changes of product selection to the compute that supports the flexible server won't have any effect on the default value for the azure_storage.blob_block_size_mb server parameter of that instance.
As of today, if you change the product assigned to an instance, you won't be able to adjust the value of azure_storage.blob_block_size_mb parameter because the parameter is declared as read-only.
The formula used to compute the value of azure_storage.blob_block_size_mb is MIN(3072, MAX(128, memoryGiB * 32)).
Based on the previous formula, the following table lists the values this server parameter would be set to depending on the amount of memory provisioned:
Memory size
azure_storage.blob_block_size_mb
2 GiB
128 MiB
4 GiB
128 MiB
8 GiB
256 MiB
16 GiB
512 MiB
32 GiB
1024 MiB
48 GiB
1536 MiB
64 GiB
2048 MiB
80 GiB
2560 MiB
128 GiB
3072 MiB
160 GiB
3072 MiB
192 GiB
3072 MiB
256 GiB
3072 MiB
384 GiB
3072 MiB
432 GiB
3072 MiB
672 GiB
3072 MiB
azure_storage.public_account_access
Attribute
Value
Category
Customized Options
Description
Allow all users to access data from public storage accounts in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
index_tuning.analysis_interval
Attribute
Value
Category
Customized Options
Description
Sets the frequency at which each index optimization session is triggered when index_tuning.mode is set to 'REPORT'.
Data type
integer
Default value
720
Allowed values
60-10080
Parameter type
dynamic
Documentation
index_tuning.analysis_interval
index_tuning.max_columns_per_index
Attribute
Value
Category
Customized Options
Description
Maximum number of columns that can be part of the index key for any recommended index.
Data type
integer
Default value
2
Allowed values
1-10
Parameter type
dynamic
Documentation
index_tuning.max_columns_per_index
index_tuning.max_index_count
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each database during one optimization session.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_index_count
index_tuning.max_indexes_per_table
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each table.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_indexes_per_table
index_tuning.max_queries_per_database
Attribute
Value
Category
Customized Options
Description
Number of slowest queries per database for which indexes can be recommended.
Data type
integer
Default value
25
Allowed values
5-100
Parameter type
dynamic
Documentation
index_tuning.max_queries_per_database
index_tuning.max_regression_factor
Attribute
Value
Category
Customized Options
Description
Acceptable regression introduced by a recommended index on any of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.1
Allowed values
0.05-0.2
Parameter type
dynamic
Documentation
index_tuning.max_regression_factor
index_tuning.max_total_size_factor
Attribute
Value
Category
Customized Options
Description
Maximum total size, in percentage of total disk space, that all recommended indexes for any given database can use.
Data type
numeric
Default value
0.1
Allowed values
0-1.0
Parameter type
dynamic
Documentation
index_tuning.max_total_size_factor
index_tuning.min_improvement_factor
Attribute
Value
Category
Customized Options
Description
Cost improvement that a recommended index must provide to at least one of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.2
Allowed values
0-20.0
Parameter type
dynamic
Documentation
index_tuning.min_improvement_factor
index_tuning.mode
Attribute
Value
Category
Customized Options
Description
Configures index optimization as disabled ('OFF') or enabled to only emit recommendation. Requires Query Store to be enabled by setting pg_qs.query_capture_mode to 'TOP' or 'ALL'.
Data type
enumeration
Default value
off
Allowed values
off,report
Parameter type
dynamic
Documentation
index_tuning.mode
index_tuning.unused_dml_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average DML operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_dml_per_table
index_tuning.unused_min_period
Attribute
Value
Category
Customized Options
Description
Minimum number of days the index has not been used, based on system statistics, so that it is considered for dropping.
Data type
integer
Default value
35
Allowed values
30-720
Parameter type
dynamic
Documentation
index_tuning.unused_min_period
index_tuning.unused_reads_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average read operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_reads_per_table
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,-]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_level
Attribute
Value
Category
Customized Options
Description
Log level for the plan.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,debug,info,notice,warning,log
Parameter type
dynamic
Documentation
auto_explain.log_level
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_settings
Attribute
Value
Category
Customized Options
Description
Log modified configuration parameters affecting query planning.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_settings
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.log_wal
Attribute
Value
Category
Customized Options
Description
Log WAL usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_wal
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,age,amcheck,anon,azure_ai,azure_storage,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,oracle_fdw,orafce,pageinspect,pg_buffercache,pg_cron,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrouting,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,postgres_protobuf,semver,session_variable,sslinfo,tablefunc,tds_fdw,timescaledb,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure_storage.allow_network_access
Attribute
Value
Category
Customized Options
Description
Allow accessing data from blob storage in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure_storage.blob_block_size_mb
Attribute
Value
Category
Customized Options
Description
Blob block size in megabytes for blob_put in extension azure_storage.
Data type
integer
Default value
Depends on resources (vCores, RAM, or disk space) allocated to the server.
Allowed values
1024
Parameter type
read-only
Documentation
azure_storage.blob_block_size_mb
Azure-specific notes
The default value for the azure_storage.blob_block_size_mb server parameter is calculated when you provision the instance of Azure Database for PostgreSQL flexible server, based on the product name that you select for its compute. Any subsequent changes of product selection to the compute that supports the flexible server won't have any effect on the default value for the azure_storage.blob_block_size_mb server parameter of that instance.
As of today, if you change the product assigned to an instance, you won't be able to adjust the value of azure_storage.blob_block_size_mb parameter because the parameter is declared as read-only.
The formula used to compute the value of azure_storage.blob_block_size_mb is MIN(3072, MAX(128, memoryGiB * 32)).
Based on the previous formula, the following table lists the values this server parameter would be set to depending on the amount of memory provisioned:
Memory size
azure_storage.blob_block_size_mb
2 GiB
128 MiB
4 GiB
128 MiB
8 GiB
256 MiB
16 GiB
512 MiB
32 GiB
1024 MiB
48 GiB
1536 MiB
64 GiB
2048 MiB
80 GiB
2560 MiB
128 GiB
3072 MiB
160 GiB
3072 MiB
192 GiB
3072 MiB
256 GiB
3072 MiB
384 GiB
3072 MiB
432 GiB
3072 MiB
672 GiB
3072 MiB
azure_storage.public_account_access
Attribute
Value
Category
Customized Options
Description
Allow all users to access data from public storage accounts in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
index_tuning.analysis_interval
Attribute
Value
Category
Customized Options
Description
Sets the frequency at which each index optimization session is triggered when index_tuning.mode is set to 'REPORT'.
Data type
integer
Default value
720
Allowed values
60-10080
Parameter type
dynamic
Documentation
index_tuning.analysis_interval
index_tuning.max_columns_per_index
Attribute
Value
Category
Customized Options
Description
Maximum number of columns that can be part of the index key for any recommended index.
Data type
integer
Default value
2
Allowed values
1-10
Parameter type
dynamic
Documentation
index_tuning.max_columns_per_index
index_tuning.max_index_count
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each database during one optimization session.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_index_count
index_tuning.max_indexes_per_table
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each table.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_indexes_per_table
index_tuning.max_queries_per_database
Attribute
Value
Category
Customized Options
Description
Number of slowest queries per database for which indexes can be recommended.
Data type
integer
Default value
25
Allowed values
5-100
Parameter type
dynamic
Documentation
index_tuning.max_queries_per_database
index_tuning.max_regression_factor
Attribute
Value
Category
Customized Options
Description
Acceptable regression introduced by a recommended index on any of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.1
Allowed values
0.05-0.2
Parameter type
dynamic
Documentation
index_tuning.max_regression_factor
index_tuning.max_total_size_factor
Attribute
Value
Category
Customized Options
Description
Maximum total size, in percentage of total disk space, that all recommended indexes for any given database can use.
Data type
numeric
Default value
0.1
Allowed values
0-1.0
Parameter type
dynamic
Documentation
index_tuning.max_total_size_factor
index_tuning.min_improvement_factor
Attribute
Value
Category
Customized Options
Description
Cost improvement that a recommended index must provide to at least one of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.2
Allowed values
0-20.0
Parameter type
dynamic
Documentation
index_tuning.min_improvement_factor
index_tuning.mode
Attribute
Value
Category
Customized Options
Description
Configures index optimization as disabled ('OFF') or enabled to only emit recommendation. Requires Query Store to be enabled by setting pg_qs.query_capture_mode to 'TOP' or 'ALL'.
Data type
enumeration
Default value
off
Allowed values
off,report
Parameter type
dynamic
Documentation
index_tuning.mode
index_tuning.unused_dml_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average DML operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_dml_per_table
index_tuning.unused_min_period
Attribute
Value
Category
Customized Options
Description
Minimum number of days the index has not been used, based on system statistics, so that it is considered for dropping.
Data type
integer
Default value
35
Allowed values
30-720
Parameter type
dynamic
Documentation
index_tuning.unused_min_period
index_tuning.unused_reads_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average read operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_reads_per_table
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,-]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_level
Attribute
Value
Category
Customized Options
Description
Log level for the plan.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,debug,info,notice,warning,log
Parameter type
dynamic
Documentation
auto_explain.log_level
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_settings
Attribute
Value
Category
Customized Options
Description
Log modified configuration parameters affecting query planning.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_settings
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,amcheck,anon,azure_ai,azure_storage,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,oracle_fdw,orafce,pageinspect,pg_buffercache,pg_cron,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrouting,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,postgres_protobuf,semver,session_variable,sslinfo,tablefunc,tds_fdw,timescaledb,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure_storage.allow_network_access
Attribute
Value
Category
Customized Options
Description
Allow accessing data from blob storage in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
azure_storage.blob_block_size_mb
Attribute
Value
Category
Customized Options
Description
Blob block size in megabytes for blob_put in extension azure_storage.
Data type
integer
Default value
Depends on resources (vCores, RAM, or disk space) allocated to the server.
Allowed values
1024
Parameter type
read-only
Documentation
azure_storage.blob_block_size_mb
Azure-specific notes
The default value for the azure_storage.blob_block_size_mb server parameter is calculated when you provision the instance of Azure Database for PostgreSQL flexible server, based on the product name that you select for its compute. Any subsequent changes of product selection to the compute that supports the flexible server won't have any effect on the default value for the azure_storage.blob_block_size_mb server parameter of that instance.
As of today, if you change the product assigned to an instance, you won't be able to adjust the value of azure_storage.blob_block_size_mb parameter because the parameter is declared as read-only.
The formula used to compute the value of azure_storage.blob_block_size_mb is MIN(3072, MAX(128, memoryGiB * 32)).
Based on the previous formula, the following table lists the values this server parameter would be set to depending on the amount of memory provisioned:
Memory size
azure_storage.blob_block_size_mb
2 GiB
128 MiB
4 GiB
128 MiB
8 GiB
256 MiB
16 GiB
512 MiB
32 GiB
1024 MiB
48 GiB
1536 MiB
64 GiB
2048 MiB
80 GiB
2560 MiB
128 GiB
3072 MiB
160 GiB
3072 MiB
192 GiB
3072 MiB
256 GiB
3072 MiB
384 GiB
3072 MiB
432 GiB
3072 MiB
672 GiB
3072 MiB
azure_storage.public_account_access
Attribute
Value
Category
Customized Options
Description
Allow all users to access data from public storage accounts in extension azure_storage.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
index_tuning.analysis_interval
Attribute
Value
Category
Customized Options
Description
Sets the frequency at which each index optimization session is triggered when index_tuning.mode is set to 'REPORT'.
Data type
integer
Default value
720
Allowed values
60-10080
Parameter type
dynamic
Documentation
index_tuning.analysis_interval
index_tuning.max_columns_per_index
Attribute
Value
Category
Customized Options
Description
Maximum number of columns that can be part of the index key for any recommended index.
Data type
integer
Default value
2
Allowed values
1-10
Parameter type
dynamic
Documentation
index_tuning.max_columns_per_index
index_tuning.max_index_count
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each database during one optimization session.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_index_count
index_tuning.max_indexes_per_table
Attribute
Value
Category
Customized Options
Description
Maximum number of indexes that can be recommended for each table.
Data type
integer
Default value
10
Allowed values
1-25
Parameter type
dynamic
Documentation
index_tuning.max_indexes_per_table
index_tuning.max_queries_per_database
Attribute
Value
Category
Customized Options
Description
Number of slowest queries per database for which indexes can be recommended.
Data type
integer
Default value
25
Allowed values
5-100
Parameter type
dynamic
Documentation
index_tuning.max_queries_per_database
index_tuning.max_regression_factor
Attribute
Value
Category
Customized Options
Description
Acceptable regression introduced by a recommended index on any of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.1
Allowed values
0.05-0.2
Parameter type
dynamic
Documentation
index_tuning.max_regression_factor
index_tuning.max_total_size_factor
Attribute
Value
Category
Customized Options
Description
Maximum total size, in percentage of total disk space, that all recommended indexes for any given database can use.
Data type
numeric
Default value
0.1
Allowed values
0-1.0
Parameter type
dynamic
Documentation
index_tuning.max_total_size_factor
index_tuning.min_improvement_factor
Attribute
Value
Category
Customized Options
Description
Cost improvement that a recommended index must provide to at least one of the queries analyzed during one optimization session.
Data type
numeric
Default value
0.2
Allowed values
0-20.0
Parameter type
dynamic
Documentation
index_tuning.min_improvement_factor
index_tuning.mode
Attribute
Value
Category
Customized Options
Description
Configures index optimization as disabled ('OFF') or enabled to only emit recommendation. Requires Query Store to be enabled by setting pg_qs.query_capture_mode to 'TOP' or 'ALL'.
Data type
enumeration
Default value
off
Allowed values
off,report
Parameter type
dynamic
Documentation
index_tuning.mode
index_tuning.unused_dml_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average DML operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_dml_per_table
index_tuning.unused_min_period
Attribute
Value
Category
Customized Options
Description
Minimum number of days the index has not been used, based on system statistics, so that it is considered for dropping.
Data type
integer
Default value
35
Allowed values
30-720
Parameter type
dynamic
Documentation
index_tuning.unused_min_period
index_tuning.unused_reads_per_table
Attribute
Value
Category
Customized Options
Description
Minimum number of daily average read operations affecting the table, so that their unused indexes are considered for dropping.
Data type
integer
Default value
1000
Allowed values
0-9999999
Parameter type
dynamic
Documentation
index_tuning.unused_reads_per_table
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,-]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers
auto_explain.log_analyze
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN ANALYZE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_analyze
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
Log buffers usage.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_buffers
Attribute
Value
Category
Customized Options
Description
EXPLAIN format to be used for plan logging.
Data type
enumeration
Default value
text
Allowed values
text,xml,json,yaml
Parameter type
dynamic
Documentation
auto_explain.log_format
auto_explain.log_min_duration
Attribute
Value
Category
Customized Options
Description
Sets the minimum execution time above which plans will be logged. Zero prints all plans. -1 turns this feature off.
Data type
integer
Default value
-1
Allowed values
-1-2147483647
Parameter type
dynamic
Documentation
auto_explain.log_min_duration
auto_explain.log_nested_statements
Attribute
Value
Category
Customized Options
Description
Log nested statements.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_nested_statements
auto_explain.log_timing
Attribute
Value
Category
Customized Options
Description
Collect timing data, not just row counts.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_timing
auto_explain.log_triggers
Attribute
Value
Category
Customized Options
Description
Include trigger statistics in plans. This has no effect unless log_analyze is also set.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_triggers
auto_explain.log_verbose
Attribute
Value
Category
Customized Options
Description
Use EXPLAIN VERBOSE for plan logging.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
auto_explain.log_verbose
auto_explain.sample_rate
Attribute
Value
Category
Customized Options
Description
Fraction of queries to process.
Data type
numeric
Default value
1.0
Allowed values
0.0-1.0
Parameter type
dynamic
Documentation
auto_explain.sample_rate
azure.accepted_password_auth_method
Attribute
Value
Category
Customized Options
Description
Accepted password authentication method.
Data type
set
Default value
md5
Allowed values
md5,scram-sha-256
Parameter type
dynamic
Documentation
azure.accepted_password_auth_method
azure.allow_hostname_in_username
Attribute
Value
Category
Customized Options
Description
Specifies if hostname is allowed in the username for Azure Database for PostgreSQL Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
azure.enable_temp_tablespaces_on_local_ssd
Attribute
Value
Category
Customized Options
Description
Create temp tablespace on ephemeral disk.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
azure.extensions
Attribute
Value
Category
Customized Options
Description
Specifies which extensions are allowed to be created in the server.
Data type
set
Default value
Allowed values
address_standardizer,address_standardizer_data_us,amcheck,anon,bloom,btree_gin,btree_gist,citext,cube,dblink,dict_int,dict_xsyn,earthdistance,fuzzystrmatch,hstore,hypopg,intagg,intarray,isn,lo,login_hook,ltree,orafce,pageinspect,pg_buffercache,pg_cron,pg_freespacemap,pg_hint_plan,pg_partman,pg_prewarm,pg_repack,pg_squeeze,pg_stat_statements,pg_trgm,pg_visibility,pgaudit,pgcrypto,pglogical,pgrouting,pgrowlocks,pgstattuple,plpgsql,plv8,postgis,postgis_raster,postgis_sfcgal,postgis_tiger_geocoder,postgis_topology,postgres_fdw,semver,session_variable,sslinfo,tablefunc,tds_fdw,timescaledb,tsm_system_rows,tsm_system_time,unaccent,uuid-ossp,vector
Parameter type
dynamic
Documentation
azure.extensions
azure.single_to_flex_migration
Attribute
Value
Category
Customized Options
Description
Specifies if this is a server created for migrating from Azure Database for PostgreSQL Single Server to Flexible Server.
Data type
boolean
Default value
off
Allowed values
off
Parameter type
read-only
Documentation
connection_throttle.bucket_limit
Attribute
Value
Category
Customized Options
Description
Max login tokens per bucket.
Data type
integer
Default value
2000
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.enable
Attribute
Value
Category
Customized Options
Description
Enables temporary connection throttling per IP for too many login failures.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
connection_throttle.factor_bias
Attribute
Value
Category
Customized Options
Description
The factor bias for calculating number of tokens for an IP's bucket.
Data type
numeric
Default value
0.8
Allowed values
0.0-0.9
Parameter type
dynamic
Documentation
connection_throttle.hash_entries_max
Attribute
Value
Category
Customized Options
Description
Max number of entries in the login failures hash table.
Data type
integer
Default value
500
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.reset_time
Attribute
Value
Category
Customized Options
Description
Time between resetting the login bucket.
Data type
integer
Default value
120
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
connection_throttle.restore_factor
Attribute
Value
Category
Customized Options
Description
Factor to increase number of tokens by for IPs with low failure rate.
Data type
numeric
Default value
2
Allowed values
1.0-100.0
Parameter type
dynamic
Documentation
connection_throttle.update_time
Attribute
Value
Category
Customized Options
Description
Time between updating the login bucket.
Data type
integer
Default value
20
Allowed values
1-2147483647
Parameter type
dynamic
Documentation
cron.database_name
Attribute
Value
Category
Customized Options
Description
Sets the database in which pg_cron metadata is kept.
Data type
string
Default value
postgres
Allowed values
[A-Za-z0-9_]+
Parameter type
static
Documentation
cron.database_name
cron.log_run
Attribute
Value
Category
Customized Options
Description
Log all jobs runs into the job_run_details table.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_run
cron.log_statement
Attribute
Value
Category
Customized Options
Description
Log all cron statements prior to execution.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
static
Documentation
cron.log_statement
cron.max_running_jobs
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of jobs that can run concurrently. This value is limited by max_connections.
Data type
integer
Default value
32
Allowed values
0-5000
Parameter type
static
Documentation
cron.max_running_jobs
logfiles.download_enable
Attribute
Value
Category
Customized Options
Description
Enables or disables server logs functionality.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
logfiles.download_enable
logfiles.retention_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for server logs - after this time data will be deleted.
Data type
integer
Default value
3
Allowed values
1-7
Parameter type
dynamic
Documentation
logfiles.retention_days
pgaudit.log
Attribute
Value
Category
Customized Options
Description
Specifies which classes of statements will be logged by session audit logging.
Data type
set
Default value
none
Allowed values
none,read,write,function,role,ddl,misc,all
Parameter type
dynamic
Documentation
pgaudit.log
pgaudit.log_catalog
Attribute
Value
Category
Customized Options
Description
Specifies that session logging should be enabled in the case where all relations in a statement are in pg_catalog.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_catalog
pgaudit.log_client
Attribute
Value
Category
Customized Options
Description
Specifies whether audit messages should be visible to client.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_client
pgaudit.log_level
Attribute
Value
Category
Customized Options
Description
Specifies the log level that will be used for log entries.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,log
Parameter type
dynamic
Documentation
pgaudit.log_level
pgaudit.log_parameter
Attribute
Value
Category
Customized Options
Description
Specifies that audit logging should include the parameters that were passed with the statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_parameter
pgaudit.log_relation
Attribute
Value
Category
Customized Options
Description
Specifies whether session audit logging should create a separate log entry for each relation referenced in a SELECT or DML statement.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_relation
pgaudit.log_statement_once
Attribute
Value
Category
Customized Options
Description
Specifies whether logging will include the statement text and parameters with the first log entry for a statement/substatement combination or with every entry.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pgaudit.log_statement_once
pgaudit.role
Attribute
Value
Category
Customized Options
Description
Specifies the master role to use for object audit logging.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pgaudit.role
pglogical.batch_inserts
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use batch insert mechanism if possible.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.batch_inserts
pglogical.conflict_log_level
Attribute
Value
Category
Customized Options
Description
Sets the log level for reporting detected conflicts when the pglogical.conflict_resolution is set to anything else than error.
Data type
enumeration
Default value
log
Allowed values
debug5,debug4,debug3,debug2,debug1,info,notice,warning,error,log,fatal,panic
Parameter type
dynamic
Documentation
pglogical.conflict_log_level
pglogical.conflict_resolution
Attribute
Value
Category
Customized Options
Description
Sets the resolution method for any detected conflicts between local data and incoming changes.
Data type
enumeration
Default value
apply_remote
Allowed values
error,apply_remote,keep_local,last_update_wins,first_update_wins
Parameter type
dynamic
Documentation
pglogical.conflict_resolution
pglogical.use_spi
Attribute
Value
Category
Customized Options
Description
Tells PGLogical to use SPI interface to form actual SQL (INSERT, UPDATE, DELETE) statements to apply incoming changes instead of using internal low level interface.
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pglogical.use_spi
pgms_stats.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.history_period
Attribute
Value
Category
Customized Options
Description
Set the frequency, in milliseconds, at which wait events are sampled.
Data type
integer
Default value
100
Allowed values
1-600000
Parameter type
dynamic
Documentation
pgms_wait_sampling.history_period
pgms_wait_sampling.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, wait sampling will be disabled despite the value set for pgms_wait_sampling.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pgms_wait_sampling.is_enabled_fs
pgms_wait_sampling.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Selects which statements are tracked by the pgms_wait_sampling extension.
Data type
enumeration
Default value
none
Allowed values
all,none
Parameter type
dynamic
Documentation
pgms_wait_sampling.query_capture_mode
pg_partman_bgw.analyze
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_analyze argument to run_maintenance().
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.analyze
pg_partman_bgw.dbname
Attribute
Value
Category
Customized Options
Description
Required. The database(s) that run_maintenance() will run on. If more than one, use a comma separated list. If not set, BGW will do nothing.
Data type
string
Default value
Allowed values
[A-Za-z0-9_,-]*
Parameter type
dynamic
Documentation
pg_partman_bgw.dbname
pg_partman_bgw.interval
Attribute
Value
Category
Customized Options
Description
Number of seconds between calls to run_maintenance().
Data type
integer
Default value
3600
Allowed values
1-315360000
Parameter type
dynamic
Documentation
pg_partman_bgw.interval
pg_partman_bgw.jobmon
Attribute
Value
Category
Customized Options
Description
Same purpose as the p_jobmon argument to run_maintenance().
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_partman_bgw.jobmon
pg_partman_bgw.role
Attribute
Value
Category
Customized Options
Description
The role that run_maintenance() will run as. Default is postgres. Only a single role name is allowed.
Data type
string
Default value
Allowed values
[A-Za-z\\._]*
Parameter type
dynamic
Documentation
pg_partman_bgw.role
pg_qs.interval_length_minutes
Attribute
Value
Category
Customized Options
Description
Sets the query_store capture interval in minutes for pg_qs - this is the frequency of data persistence.
Data type
integer
Default value
15
Allowed values
1-30
Parameter type
static
Documentation
pg_qs.interval_length_minutes
pg_qs.is_enabled_fs
Attribute
Value
Category
Customized Options
Description
Internal Use Only: This parameter is used as a feature override switch. If it shows as off, Query Store will be disabled despite the value set for pg_qs.query_capture_mode.
Data type
boolean
Default value
on
Allowed values
on
Parameter type
read-only
Documentation
pg_qs.is_enabled_fs
pg_qs.max_plan_size
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of bytes that will be saved for query plan text for pg_qs; longer plans will be truncated.
Data type
integer
Default value
7500
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_plan_size
pg_qs.max_query_text_length
Attribute
Value
Category
Customized Options
Description
Sets the maximum query text length that will be saved; longer queries will be truncated.
Data type
integer
Default value
6000
Allowed values
100-10000
Parameter type
dynamic
Documentation
pg_qs.max_query_text_length
pg_qs.parameters_capture_mode
Attribute
Value
Category
Customized Options
Description
Whether and when to capture query positional parameters.
Data type
enumeration
Default value
capture_parameterless_only
Allowed values
capture_parameterless_only,capture_first_sample
Parameter type
dynamic
Documentation
pg_qs.parameters_capture_mode
pg_qs.query_capture_mode
Attribute
Value
Category
Customized Options
Description
Sets query capture mode for query store. None disables any capturing.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_qs.query_capture_mode
pg_qs.retention_period_in_days
Attribute
Value
Category
Customized Options
Description
Sets the retention period window in days for pg_qs - after this time data will be deleted.
Data type
integer
Default value
7
Allowed values
1-30
Parameter type
dynamic
Documentation
pg_qs.retention_period_in_days
pg_qs.store_query_plans
Attribute
Value
Category
Customized Options
Description
Turns saving query plans on or off for pg_qs
Data type
boolean
Default value
off
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.store_query_plans
pg_qs.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_qs.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_qs.track_utility
pg_stat_statements.max
Attribute
Value
Category
Customized Options
Description
Sets the maximum number of statements tracked by pg_stat_statements.
Data type
integer
Default value
5000
Allowed values
100-2147483647
Parameter type
static
Documentation
pg_stat_statements.max
pg_stat_statements.save
Attribute
Value
Category
Customized Options
Description
Save pg_stat_statements statistics across server shutdowns.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.save
pg_stat_statements.track
Attribute
Value
Category
Customized Options
Description
Controls which statements are counted by pg_stat_statements.
Data type
enumeration
Default value
none
Allowed values
top,all,none
Parameter type
dynamic
Documentation
pg_stat_statements.track
pg_stat_statements.track_utility
Attribute
Value
Category
Customized Options
Description
Selects whether utility commands are tracked by pg_stat_statements.
Data type
boolean
Default value
on
Allowed values
on,off
Parameter type
dynamic
Documentation
pg_stat_statements.track_utility
postgis.gdal_enabled_drivers
Attribute
Value
Category
Customized Options
Description
Controls postgis GDAL enabled driver settings.
Data type
enumeration
Default value
DISABLE_ALL
Allowed values
DISABLE_ALL,ENABLE_ALL
Parameter type
dynamic
Documentation
postgis.gdal_enabled_drivers