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SQL Server Buffer Cache Hit Ratio


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#1 Guest_drosen10_*

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Posted 30 November 2012 - 08:28 PM

I'm monitoring the SQL Server Buffer Cache Hit Ratio. Results are always numbers greater than 1 - sometimes much greater (1500, for example.)
A hit ratio should always be 1 or less, so what's happening here?

#2 Sergei Leonov

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Posted 05 December 2012 - 09:55 AM

We use the standard MSSQL counter. The SQL statement for this counter is
SELECT cntr_value
FROM sys.sysperfinfo
WHERE (object_name='SQLServer:Buffer Manager' OR object_name= (Select('MSSQL$'%2bconvert(varchar,SERVERProperty ('InstanceName'))%2b':Buffer Manager'))) AND counter_name ='Buffer cache hit ratio'
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