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Buffer cache hit ration ( for week )


Buffer cache hit ration ( for week )

Author
Message
OracleBoy
OracleBoy
SSC-Enthusiastic
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Group: General Forum Members
Points: 161 Visits: 74
Hi everybody , I need your help please :
I want to create a graph to show the progression of the "buffer cache hit ratio" for last 7 days (a week).
Until now I use this script (actual moment ) :


SELECT CAST(
(
SELECT CAST (cntr_value AS BIGINT)
FROM sys.dm_os_performance_counters
WHERE counter_name = 'Buffer cache hit ratio'
)* 100.00
/
(
SELECT CAST (cntr_value AS BIGINT)
FROM sys.dm_os_performance_counters
WHERE counter_name = 'Buffer cache hit ratio base'
) AS NUMERIC(6,3)
)


Grant Fritchey
Grant Fritchey
SSC Guru
SSC Guru (95K reputation)SSC Guru (95K reputation)SSC Guru (95K reputation)SSC Guru (95K reputation)SSC Guru (95K reputation)SSC Guru (95K reputation)SSC Guru (95K reputation)SSC Guru (95K reputation)

Group: General Forum Members
Points: 95793 Visits: 33013
Just turn that same query into an INSERT ... SELECT... statement and save the data into a table along with the date and time that you collected the information. Then you can generate a report. There's no way just from the DMO you're querying to see what's happening over the week. You have to store that information in some manner.

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