How to verify asynchronous concurrent IO on AIX
- From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 10 Nov 2005 08:56:03 -0700
We just implemented Concurrent I/O (mount -cio & filesystemio_options=setall)
on our AIX 5.2 ML4 sever with Oracle 9.2.0.5, as recommended by IBM and Oracle,
but after preliminary testing performance seems to be worse, or the same at
best.
I remember seeing a note on Metalink about how to verify that Oracle is
actually using direct I/O, but now I can't find it. Does anyone know how to
verify that Oracle is actually performing asynch IO & concurrent IO?
Thanks,
Brandon Allen
Database Administrator
OneNeck IT Services
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