Re: S85 not quite right !!
From: Hunter, Mark (Mark.Hunter_at_ANHEUSER-BUSCH.COM)
Date: 06/30/03
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Date: Mon, 30 Jun 2003 09:18:22 -0500 To: aix-l@Princeton.EDU
Need more information to even guess where to start.
1. ML11 has an aio patch oracle needs. Should look at going to it soon.
2. Send results of a vmstat 5 5
3. ipcs -bm
4. lsps -s
5. vmtune
6. lsattr -E -l aio0
Typical answer here would be the Oracle DBAs setting their SGA too large and
eating all memory. 8GB of RAM is not that much for a 1 TB database. You should
tune down max and min perm so that you don't double buffer. Have you gone the
the guide to configure AIX for oracle? There is a white paper or a red book,
don't remember which.
-----Original Message-----
From: Spencer Johnson [mailto:Spencer.Johnson@2020LOG.COM]
Sent: Monday, June 30, 2003 8:49 AM
To: aix-l@Princeton.EDU
Subject: S85 not quite right !!
Hi list,
I have a slight problem / issue, this is related to an 7017-S85 server,
connected to F20 ESS. The server is a 6W - 8 GB RAM running Oracle 8.1.7.4 with
database instance of approx. 1 TB.
The problem is that most operations (coping files, etc) cause the system to page
and send the CPU's into Wait state constantly, I have logged a call with IBM and
they have
come back with a few suggestions of changing vmtune parameters.
Oracle is tuned to allow for 6W processors but I feel that the O/S is being
restricted by something. The disks do not perform that much work (only 50% busy
at max).
The O/S is currently at 4.3.3 ML 10, but am considering going to ML 11.
Has anyone out there had similar experiences and how have they been overcome.
Spencer Johnson
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