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Microsoft® SQL Server 2008 R2 Unleashed
book

Microsoft® SQL Server 2008 R2 Unleashed

by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
September 2010
Intermediate to advanced content levelIntermediate to advanced
1704 pages
111h 8m
English
Sams
Content preview from Microsoft® SQL Server 2008 R2 Unleashed

Using sys.dm_exec_query_plan

Dynamic management views (DMVs) can return server state information that can be used to monitor and diagnose database engine issues and help tune performance. The sys.dm_exec_query_plan DMV returns the showplan information for a T-SQL batch whose query execution plan resides in the plan cache. This can be any SQL batch, not just the batch executed by the current user session. The sys.dm_exec_query_plan DMV also provides the capability to retrieve the execution plan for currently long-running processes to help diagnose why they may be running slowly.

The showplan information provided by sys.dm_exec_query_plan is returned in a column called query_plan, which is of the xml data type. This column provides the same information ...

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Publisher Resources

ISBN: 9780768696585Purchase book