Wait Type SLEEP_BPOOL_FLUSH

The wait type SLEEP_BPOOL_FLUSH is ranked #58 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 SLEEP_BPOOL_FLUSH wait type is a type of wait that occurs when a session is waiting for the buffer pool to be flushed. This type of wait is typically associated with database operations that require the buffer pool to be cleared, such as creating or dropping a database, or backing up or restoring a database.

When a session is waiting on the SLEEP_BPOOL_FLUSH wait type, it means that it is unable to proceed with its current operation until the buffer pool has been flushed. This can cause delays and slow down the overall performance of the SQL Server instance.

To troubleshoot and resolve issues related to the SLEEP_BPOOL_FLUSH 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 processes that are executing the database operation, as well as any other operations that are running concurrently on the SQL Server instance.

In some cases, it may be necessary to optimize the queries or processes that are causing the SLEEP_BPOOL_FLUSH 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 buffer pool to improve its performance and reduce the need for flushing.

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

Applies to

Related Waits

SLEEP_BPOOL_STEAL
SLEEP_BUFFERPOOL_HELPLW
SLEEP_MEMORYPOOL_ALLOCATEPAGES
SLEEP_TASK

See Also


All Wait Types