Yes, all volumes are RAID-5 sets. I am now working with the storage guys and hope that we will be able to thoroughly check all the subsystems. I will share our findings to the list. Thanks for all suggestions! Pawel On 2009-05-16 22:02, Cary Millsap wrote:
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 http://carymillsap.blogspot.com http://twitter.com/cary_millsap2009/5/16 Rajeev Prabhakar <rprabha01@xxxxxxxxx <mailto:rprabha01@xxxxxxxxx>>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 Paweł Kotlarz <pkotla@xxxxxx>: > Thanks, Rajeev. I appreciate your help very much! > > Pawel -- //www.freelists.org/webpage/oracle-l
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