Re: AIX 5.2 - JFS2 - CIO/DIO
- From: Fuad Arshad <fuadar@xxxxxxxxx>
- To: Patty.Charlebois@xxxxxxxxxxxxxx, oracle-l@xxxxxxxxxxxxx
- Date: Wed, 25 Apr 2007 08:10:33 -0700 (PDT)
We went witrh CIO mounts(we're 9). but in 10g you dont have to have the
filesystem mounted as cio since if you set the filesystemio_options=setall
oracle issues the o_cio and the o_dio calls to the filesystem thus making it
transparent to the system.
IBM has a very nice document Oracle Architecture and tuning on AIX. written
by Damir Rubic and updated November 2006 that you should read to understand .
if you want i can send you that document offlist.
When using CIO you bypass the filesystem cache.
----- Original Message ----
From: "Patty.Charlebois@xxxxxxxxxxxxxx" <Patty.Charlebois@xxxxxxxxxxxxxx>
To: oracle-l@xxxxxxxxxxxxx
Sent: Wednesday, April 25, 2007 8:08:18 AM
Subject: AIX 5.2 - JFS2 - CIO/DIO
We are currently in the process of moving our filesystems from JFS to JFS2 and
will soon be migrating out databases from 9.2.0.7 to 10.2.0.3.
Does anyone have any experience with AIX 5.2 - JFS2 and recommendations for
mounting the filesystems and using CIO/DIO with Oracle 10.2?
I would especially appreciate any information on problems and/or bugs
encountered and whether or not you use FS caching.
Thanks in advance...
Patty
Green Shield Canada - Celebrating 50 years.
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