aix 5.2, oracle 9.2 and mount with CIO option

From: Hunter, Mark (Mark.Hunter@ANHEUSER-BUSCH.COM)
Date: Wed Sep 03 2003 - 11:23:47 EDT

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Any one have any experience with concurrent access mounted directory for Oracle
databases?
AIX 5.2 with Maint level 1.

4 way striped logical volumes with 64K stripe size.

A simple dd if=/dev/zero of=filename bs=4096 runs incredibly slow. IBM's
whitepaper on this indicates I should see very good performance.

The actual database runs about 30% slower than with normal, cached I/O.

Mark Hunter
Anheuser-Busch Cos.
MIS Consultant, Computer Services
*Office: (314) 632-6663
*Fax: (314) 632-6901
*Pager: (314) 841-4026
*Email: Mark.Hunter@Anheuser-Busch.com

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