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sp_helptracertokens (Transact-SQL)

  • Artikkeli

Applies to: SQL Server Azure SQL Managed Instance

Returns one row for each tracer token that was inserted into a publication to determine latency. This stored procedure is executed at the Publisher on the publication database or at the Distributor on the distribution database.

Transact-SQL syntax conventions

Syntax

sp_helptracertokens
    [ @publication = ] N'publication'
    [ , [ @publisher = ] N'publisher' ]
    [ , [ @publisher_db = ] N'publisher_db' ]
[ ; ]

Arguments

[ @publication = ] N'publication'

The name of the publication in which tracer tokens were inserted. @publication is sysname, with no default.

[ @publisher = ] N'publisher'

The name of the Publisher. @publisher is sysname, with a default of NULL.

@publisher should only be specified for non-SQL Server Publishers.

[ @publisher_db = ] N'publisher_db'

The name of the publication database. @publisher_db is sysname, with a default of NULL. @publisher_db is ignored if the stored procedure is executed at the Publisher.

Result set

Column name Data type Description
tracer_id int Identifies a tracer token record.
publisher_commit datetime The date and time that the token record was committed at the Publisher in the publication database.

Return code values

0 (success) or 1 (failure).

Remarks

sp_helptracertokens is used in transactional replication.

sp_helptracertokens is used to obtain tracer token IDs when executing sp_helptracertokenhistory.

Examples

DECLARE @publication AS sysname;
DECLARE @tokenID AS int;
SET @publication = N'AdvWorksProductTran'; 

USE [AdventureWorks2022]

-- Insert a new tracer token in the publication database.
EXEC sys.sp_posttracertoken 
  @publication = @publication,
  @tracer_token_id = @tokenID OUTPUT;
SELECT 'The ID of the new tracer token is ''' + 
    CONVERT(varchar,@tokenID) + '''.'
GO

-- Wait 10 seconds for the token to make it to the Subscriber.
WAITFOR DELAY '00:00:10';
GO

-- Get latency information for the last inserted token.
DECLARE @publication AS sysname;
DECLARE @tokenID AS int;
SET @publication = N'AdvWorksProductTran'; 

CREATE TABLE #tokens (tracer_id int, publisher_commit datetime)

-- Return tracer token information to a temp table.
INSERT #tokens (tracer_id, publisher_commit)
EXEC sys.sp_helptracertokens @publication = @publication;
SET @tokenID = (SELECT TOP 1 tracer_id FROM #tokens
ORDER BY publisher_commit DESC)
DROP TABLE #tokens

-- Get history for the tracer token.
EXEC sys.sp_helptracertokenhistory 
  @publication = @publication, 
  @tracer_id = @tokenID;
GO

Permissions

Only members of the sysadmin fixed server role, the db_owner fixed database role in the publication database, or db_owner fixed database or replmonitor roles in the distribution database can execute sp_helptracertokenhistory.

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