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Home -> Community -> Mailing Lists -> Oracle-L -> RE: On AIX using DIO/CIO on JFS2
Thanks for the info, but I'm not sure how this would cause problems for Oracle. If you're using DIO or CIO, how would you get a "cached write" since dio/cio bypass the cache by definition? Also, if you're working with Oracle blocks of say 8k, and your cio filesystem is created with the default 4k page size, how would you get a non-page-aligned file size?
Did you actually have problems in Oracle due to this bug?
Thanks,
Brandon
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Denny Koovakattu
Sent: Friday, February 17, 2006 12:28 PM
To: oracle-l_at_freelists.org
Subject: Bug: On AIX using DIO/CIO on JFS2
FYI: The following was released by IBM today and was classified as a HIPER (High Impact/Highly Pervasive).
APAR Number: IY78323
A cached write to a JFS2 file resulting in a non-page-aligned
file size followed by a subsequent DIO/CIO write to the last
block of the file results in no size increase, losing part
of the last write. This only occurs on JFS2.
Regards,
Denny
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Denny Koovakattu
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Received on Fri Feb 17 2006 - 14:00:35 CST
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