Wait Type SLEEP_BPOOL_STEAL

The wait type SLEEP_BPOOL_STEAL is ranked #124 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 SLEEP_BPOOL_STEAL wait type in SQL Server is a type of wait that occurs when a task is waiting for a buffer pool to free up memory in order to complete its operation. This type of wait can occur when a query is trying to access data pages that are not currently in the buffer pool and need to be brought into memory.

When SQL Server encounters this wait type, it means that the query is unable to continue processing until memory is freed up in the buffer pool. This can result in slower query performance and can even cause the query to time out if the wait is prolonged.

One way to reduce the occurrence of SLEEP_BPOOL_STEAL waits is to ensure that the buffer pool is large enough to hold all the data that is frequently accessed by queries. This can help to reduce the number of times that SQL Server needs to read data from disk into memory and free up memory in the buffer pool.

Additionally, properly indexing your tables can also help to reduce the amount of memory that is required in the buffer pool. This can help to improve overall query performance and reduce the occurrence of SLEEP_BPOOL_STEAL waits.

In summary, the SLEEP_BPOOL_STEAL wait type in SQL Server indicates that a task is waiting for memory to be freed up in the buffer pool in order to complete its operation. This can result in slower query performance and can be reduced by ensuring that the buffer pool is large enough and that tables are properly indexed.

Applies to

Related Waits

SLEEP_BPOOL_FLUSH
SLEEP_BUFFERPOOL_HELPLW
SLEEP_MEMORYPOOL_ALLOCATEPAGES
SLEEP_TASK

See Also


All Wait Types