All instances for service are AVAIL none PREF in RAC

From: Yong Huang <>
Date: Tue, 16 Dec 2008 07:45:49 -0800 (PST)
Message-ID: <>

2-node RAC, Redhat 5

I have a service accidentally configured with both instances as available and none as preferred:

$ srvctl config service -d dbname -s PREF: AVAIL: instance1 instance2

Oracle support says there's no harm. Everything will work. Currently the sessions using this service spread on both nodes evenly and seem to work perfectly. Can anybody think of anything I need to be aware of? I intended to configure it as both preferred and none available. Is it worth changing it?

Yong Huang       

Received on Tue Dec 16 2008 - 09:45:49 CST

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