Had severe perf issues on Oracle 8.1.7.4 on AIX 4.3.3 several years ago.
Adjusting the number of kaio server fixed the problem.

If you are using KAIO on AIX - check Metalink Doc ID: Note:271444.1
AIX Kernel Parameters - Required for Asynchronous I/O Tuning


Regards,
Ephraim V. Malag Jr.
Global DBA Services - US (IES-GTO)
Deutsche Bank, 100 Plaza One, 7th Floor Jersey City, NJ 07311
ephraim.v.[Email address protected]
(201)-860-4901
DBA Hotline: (973)-606-3900
Remedy PM & GRS and CM Group --> WORLDWIDE/INFORMATION ENTERPRISE
SERVICE/NYC_DATABASE_ES US DBA SUPPORT

" There is nothing to it but to do it ---- and a CM ticket"


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