Re: Fwd: AIX Concurrent I/O for Oracle archive logs
- From: Subodh Deshpande <deshpande.subodh@xxxxxxxxx>
- To: Brandon.Allen@xxxxxxxxxxx
- Date: Wed, 26 May 2010 10:13:22 +0530
Hi,
I have found two links related to the same subject
http://unix.derkeiler.com/Mailing-Lists/AIX-L/2009-11/msg00022.html
http://unix.derkeiler.com/Newsgroups/comp.unix.aix/2005-07/0481.html
thanks..subodh
On 26 May 2010 03:49, Allen, Brandon <Brandon.Allen@xxxxxxxxxxx> wrote:
> Thanks Jesse & David, and David your guess is welcome – without any
> explanation given by Oracle, I think that’s the best we can do at this
> point. Oracle *does* recommend putting *online* redo logs on CIO (and
> configuring the filesystem with agblksize=512) – it’s only *archived* log
> files that they say not to put on CIO for some reason. If they were going
> to be overly cautious regarding block size boundaries, I’d think they would
> do so with regards to the online logs even more so than with the archived
> logs. In my case, it’s not for the performance of archiving logs that I
> want to put them on CIO, it’s in order to prevent the archived log files
> from flooding the AIX buffer cache and causing heavy paging when they get
> backed up to tape.
>
>
>
> I’ve opened a new SR to ask Oracle about this specifically so I’ll update
> the thread when I get a response.
>
>
>
> Regards,
>
> Brandon
>
>
>
>
>
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