Looking for pointers in troubleshooting -> RAC performance degradation (single instance is fine)
- From: "Pradeep Chetal" <Pradeep.Chetal@xxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 24 Dec 2009 08:28:51 -0500
Folks,
We have an app that is running well in single instance but when put on a
2-node or 3-node RAC, we see pretty much similar performance. However,
if the CPU time is 55-60% in single instance, it becomes 20% in 3-node
RAC and top-5 itmed events become..
"gc buffer busy", "gc current block busy", "enq: TX- index contention
Any help in what to look for will be greatly appreciated.
Thanks,
-- Pradeep
Pradeep Chetal
Sr. Director - Infrastructure Architecture
Mformation Technologies Inc.
Switchboard: +1 732 692 6200
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