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dbcc-updateusage-transact-sql.md

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title DBCC UPDATEUSAGE (Transact-SQL)
description DBCC UPDATEUSAGE reports and corrects pages and row count inaccuracies in the catalog views.
author rwestMSFT
ms.author randolphwest
ms.date 12/05/2022
ms.service sql
ms.subservice t-sql
ms.topic reference
ms.custom
ignite-2025
f1_keywords
UPDATEUSAGE
UPDATEUSAGE_TSQL
DBCC_UPDATEUSAGE_TSQL
DBCC UPDATEUSAGE
helpviewer_keywords
inaccurate page or row counts [SQL Server]
space [SQL Server], usage reports
updating space usage information
updating row counts
disk space [SQL Server], inaccurate counts
counting pages
reporting count inaccuracies
updating page counts
synchronization [SQL Server], inaccurate counts
incorrect space usage reports [SQL Server]
DBCC UPDATEUSAGE statement
integrity [SQL Server], database objects
counting rows
row count accuracy [SQL Server]
page count accuracy [SQL Server]
dev_langs
TSQL
monikerRange =azuresqldb-current || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric-sqldb

DBCC UPDATEUSAGE (Transact-SQL)

[!INCLUDE SQL Server SQL Database Azure SQL Managed Instance FabricSQLDB]

Reports and corrects pages and row count inaccuracies in the catalog views. These inaccuracies may cause incorrect space usage reports returned by the sp_spaceused system stored procedure.

:::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: Transact-SQL syntax conventions

Syntax

DBCC UPDATEUSAGE
(   { database_name | database_id | 0 }
    [ , { table_name | table_id | view_name | view_id }
    [ , { index_name | index_id } ] ]
) [ WITH [ NO_INFOMSGS ] [ , ] [ COUNT_ROWS ] ]

Arguments

database_name | database_id | 0

The name or ID of the database for which to report and correct space usage statistics. If 0 is specified, the current database is used. Database names must comply with the rules for identifiers.

table_name | table_id | view_name | view_id

The name or ID of the table or indexed view for which to report and correct space usage statistics. Table and view names must comply with the rules for identifiers.

index_id | index_name

The ID or name of the index to use. If not specified, the statement processes all indexes for the specified table or view.

WITH

Allows options to be specified.

NO_INFOMSGS

Suppresses all informational messages.

COUNT_ROWS

Specifies that the row count column is updated with the current count of the number of rows in the table or view.

Remarks

DBCC UPDATEUSAGE corrects the rows, used pages, reserved pages, leaf pages and data page counts for each partition in a table or index. If there are no inaccuracies in the system tables, DBCC UPDATEUSAGE returns no data. If inaccuracies are found and corrected and WITH NO_INFOMSGS isn't used, DBCC UPDATEUSAGE returns the rows and columns being updated in the system tables.

DBCC CHECKDB has been enhanced to detect when page or row counts become negative. When detected, the DBCC CHECKDB output contains a warning and a recommendation to run DBCC UPDATEUSAGE to address the issue.

Best practices

We recommend the following:

  • Don't run DBCC UPDATEUSAGE routinely, as [!INCLUDEssNoVersion] maintains the metadata under most circumstances. DBCC UPDATEUSAGE should be run on an as-needed basis, for example, when you suspect incorrect values are being returned by sp_spaceused. DBCC UPDATEUSAGE can take some time to run on large tables or databases.
  • Consider running DBCC UPDATEUSAGE routinely (for example, weekly) only if the database undergoes frequent Data Definition Language (DDL) modifications, such as CREATE, ALTER, or DROP statements.

Result sets

DBCC UPDATEUSAGE returns (values may vary):

DBCC execution completed. If DBCC printed error messages, contact your system administrator.

Permissions

Requires membership in the sysadmin fixed server role or the db_owner fixed database role.

Examples

A. Update page or row counts or both for all objects in the current database

The following example specifies 0 for the database name and DBCC UPDATEUSAGE reports updated page or row count information for the current database.

DBCC UPDATEUSAGE (0);
GO

B. Update page or row counts or both for AdventureWorks, and suppressing informational messages

The following example specifies [!INCLUDEssSampleDBobject] as the database name and suppresses all informational messages.

DBCC UPDATEUSAGE (AdventureWorks2022) WITH NO_INFOMSGS;
GO

C. Update page or row counts or both for the Employee table

The following example reports updated page or row count information for the Employee table in the [!INCLUDEssSampleDBobject] database.

DBCC UPDATEUSAGE (AdventureWorks2022, 'HumanResources.Employee');
GO

D. Update page or row counts or both for a specific index in a table

The following example specifies IX_Employee_ManagerID as the index name.

DBCC UPDATEUSAGE (AdventureWorks2022, 'HumanResources.Employee', IX_Employee_OrganizationLevel_OrganizationNode);
GO

See also