RE: The ill effects of NOT using direct I/O
- From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
- To: "dbvision@xxxxxxxxxxxx" <dbvision@xxxxxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 15 Feb 2011 09:19:01 -0700
I didn't see any error in the doc - it says that filesystemio_options=setall
enables CIO for jfs2 and DIO for jfs:
"This enables Concurrent I/O on JFS2 and Direct I/O on JFS for all data file
I/O"
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Nuno Souto
>
> http://download.oracle.com/docs/cd/B19306_01/server.102/b15658/appa_aix.htm#i631245
>
This must be a doco error. JFS does not support cio.
As that same link shows in the "File System IO Options", Concurrent IO does not
work for jfs: it is exclusive to jfs2. That detail should not be forgotten.
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