当前位置: 动力学知识库 > 问答 > 编程问答 >

How to Clear down Query Execution Statistics in SQL Server 2005/2008

问题描述:

Based on getting Query Execution Statistics using this extremely useful piece of SQL obtained from this post Most Executed Stored Procedure - Stack Overflow:

SELECT TOP 100

qt.TEXT AS 'SP Name',

SUBSTRING(qt.text, qs.statement_start_offset/2, CASE WHEN (qs.statement_end_offset = -1) THEN LEN(qt.text) ELSE (qs.statement_end_offset - qs.statement_start_offset)/2 END) AS actual_query,

qs.execution_count AS 'Execution Count',

qs.total_worker_time/qs.execution_count AS 'AvgWorkerTime',

qs.total_worker_time AS 'TotalWorkerTime',

qs.total_physical_reads AS 'PhysicalReads',

qs.creation_time 'CreationTime',

qs.execution_count/DATEDIFF(Second, qs.creation_time, GETDATE()) AS 'Calls/Second'

FROM sys.dm_exec_query_stats AS qs

CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS qt

WHERE qt.dbid = (SELECT dbid

FROM sys.sysdatabases

WHERE name = 'BSP')

ORDER BY qs.total_worker_time/qs.execution_count DESC

How would I completely clear out these execution statistics and start from scratch?

This would be particularly useful as development bugs and testing have caused routines to be called an usually large number of times thus invaliding the true usage levels.

网友答案:
DBCC FREEPROCCACHE
DBCC DROPCLEANBUFFERS
分享给朋友:
您可能感兴趣的文章:
随机阅读: