Re: Oracle 10g hangs intermittently waiting for I/O

From: Cary Millsap <cary.millsap_at_method-r.com>
Date: Sat, 16 May 2009 15:02:01 -0500
Message-ID: <3a2a84fc0905161302n221905f4g9cc2d559822401cd_at_mail.gmail.com>

I keep thinking "RAID cache flush" as I read this thread, but I don't think I've seen anyone mention it yet. RAID 5 perchance? I hate guessing instead of measuring...

Cary Millsap
Method R Corporation

http://method-r.com
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2009/5/16 Rajeev Prabhakar <rprabha01_at_gmail.com>

> Hi Pawel,
>
> In no particular order, please check with your sysadmins/storage admins
> about the following :
>
> a) Queue depth of the LUNs / associated optimal settings for your storage.
>
> b) Any unsuccessful microcode/firmware upgrade on the FC fabric.
>
> c) Double check for any combination of any FC/non-FC drives
> OR any failure of drives/associated raid group rebuild errors.
>
> d) LUN level i/o statistics and any out of ordinary observations.
>
> -Rajeev
>
>
> 2009/5/16 Pawe³ Kotlarz <pkotla_at_go2.pl>:
> > Thanks, Rajeev. I appreciate your help very much!
> >
> > Pawel
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

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Received on Sat May 16 2009 - 15:02:01 CDT