RE: Measure CPU utilization for a database
- From: <Joel.Patterson@xxxxxxxxxxx>
- To: <Joel.Patterson@xxxxxxxxxxx>, <Sreejith.Sreekantan@xxxxxxxxxx>, <fmhabash@xxxxxxxxx>
- Date: Wed, 6 Apr 2011 09:42:50 -0400
I read the thread backwards, so I figure you are already past this comment.
Sorry if this is redundant.
Joel Patterson
Database Administrator
904 727-2546
________________________________
From: Patterson, Joel
Sent: Wednesday, April 06, 2011 9:40 AM
To: 'Sreejith.Sreekantan@xxxxxxxxxx'; fmhabash
Cc: oracle-l@xxxxxxxxxxxxx
Subject: RE: Measure CPU utilization for a database
For a moment in time.
Also the % is an average over the last X minutes, whatever that is. I think
you will find that if you add up all the CPU % busy for each instance on the
host, the will sum to greater than 100%.
To actually 'average' each instance across 24 hours is much harder in that the
CPU for each instance can fluctuate a lot. Batch processing at night is also a
facter that will make the CPU fluctuate
Joel Patterson
Database Administrator
904 727-2546
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Sreejith S Nair
Sent: Wednesday, April 06, 2011 8:44 AM
To: fmhabash
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: Measure CPU utilization for a database
Thanks,
Since this figure comes from the snapshot values which my formula was derived
from, Can we use the values which are stored in dynamic views as mentioned in
my calculation?
With Regards,
Sreejith
--
Sreejith S Nair
Associate Systems Architect | AOS DBA Team
From: fmhabash <fmhabash@xxxxxxxxx>
To: Sreejith.Sreekantan@xxxxxxxxxx
Cc: oracle-l@xxxxxxxxxxxxx
Date: 04/06/2011 06:09 PM
Subject: Re: Measure CPU utilization for a database
________________________________
Go after awr INSTANCE CPU PERCENTAGES: % of busy cpu for instance. This
gives you instance cpu as percent of total host cpu.
Thank you.
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