Wait Type VERSIONING_COMMITTING

The wait type VERSIONING_COMMITTING is ranked #253 by Stedman Solutions and Database Health Monitor.

Wait statistics, in the context of SQL Server, refer to the amount of time that a query spends waiting to access data in the database. When a client application requests data from the database, the request is placed in a queue and the client application must wait for its turn to access the data. The time that the query spends waiting is called a "wait" and is tracked by SQL Server. This information can be used to identify potential performance bottlenecks and optimize the performance of the database. Wait statistics are commonly used by database administrators to diagnose and troubleshoot performance issues in SQL Server.

The SQL Server VERSIONING_COMMITTING wait type is a type of wait that occurs when a session is waiting for a version store cleanup to commit. This type of wait is typically associated with database operations that use row versioning, such as SELECT FOR UPDATE or SELECT FOR SHARE queries, or transactions that have been marked for read-committed snapshot isolation.

When a session is waiting on the VERSIONING_COMMITTING wait type, it means that it is unable to proceed with its current operation until the version store cleanup has committed. This can cause delays and slow down the overall performance of the SQL Server instance.

To troubleshoot and resolve issues related to the VERSIONING_COMMITTING wait type, it is important to first determine what operation is causing the wait and then investigate why that operation is taking a long time to complete. This may involve looking at the queries or transactions that are using row versioning, as well as the performance and availability of the version store.

In some cases, it may be necessary to optimize the queries or transactions that are causing the VERSIONING_COMMITTING waits, or to adjust the workload on the SQL Server instance to reduce the occurrence of this wait type. It may also be necessary to adjust the settings of the version store to improve its performance and reduce the need for cleanup operations.

Overall, the VERSIONING_COMMITTING wait type can be a useful indicator of potential performance issues related to row versioning in SQL Server, and can help DBAs and developers identify and resolve those issues to improve the performance of their databases.

Applies to

See Also

All Wait Types