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Display data and log space information for a database

  • Artikel

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL database in Microsoft Fabric

This article describes how to display the data and log space information for a database in SQL Server by using SQL Server Management Studio or Transact-SQL.

Before you begin

Permission to run sp_spaceused is granted to the public role. Only members of the db_owner fixed database role can specify the @updateusage parameter.

Use SQL Server Management Studio

Display data and log space information for a database

  1. In Object Explorer, connect to an instance of SQL Server and then expand that instance.

  2. Expand Databases.

  3. Right-click a database, point to Reports, point to Standard Reports, and then select Disk Usage.

Use Transact-SQL

Display data and log space information for a database by using sp_spaceused

  1. Connect to the Database Engine.

  2. On the Standard toolbar, select New Query.

  3. Paste the following example into the query window and then select Execute. This example uses the sp_spaceused system stored procedure to report disk space information for the entire database, including tables and indexes.

    USE AdventureWorks2022;  
GO  
EXEC sp_spaceused;  
GO

Display data space used, by object and allocation unit, for a database

  1. Connect to the Database Engine.

  2. On the Standard toolbar, select New Query.

  3. Paste the following example into the query window and then select Execute. This example queries object catalog views to report disk space usage per table and within each table per allocation unit.

    SELECT
  t.object_id,
  OBJECT_NAME(t.object_id) ObjectName,
  sum(u.total_pages) * 8 Total_Reserved_kb,
  sum(u.used_pages) * 8 Used_Space_kb,
  u.type_desc,
  max(p.rows) RowsCount
FROM
  sys.allocation_units u
  JOIN sys.partitions p on u.container_id = p.hobt_id
  JOIN sys.tables t on p.object_id = t.object_id
GROUP BY
  t.object_id,
  OBJECT_NAME(t.object_id),
  u.type_desc
ORDER BY
  Used_Space_kb desc,
  ObjectName;

Display data and log space information for a database by querying sys.database_files

  1. Connect to the Database Engine.

  2. On the Standard toolbar, select New Query.

  3. Paste the following example into the query window then select Execute. This example queries the sys.database_files catalog view to return specific information about the data and log files in the AdventureWorks2022 database.

    USE AdventureWorks2022;  
GO  
SELECT file_id, name, type_desc, physical_name, size, max_size  
FROM sys.database_files;  
GO

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