Duty Free!!

SQL Write-Ahead Overhead…

Query Timeouts – A client side feature only.

Yes thats true.. The feature of a Query timeout is a Client side feature and the Database engine doesnt have any involvement in it except accepting a “Attention event” from the Client.

Once the SQL Server database engine receives a Attention Event, it tries to stop serving to the session at the earliest but not immediately. This would take care of any locks that need to be freed before aborting the query execution. 

For a better understanding of this Event and Query Timeouts check out Ken Hendersen’s blog


January 21, 2009 - Posted by | SQL Server

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