2-node RAC 10.2.0.4, Redhat 5 I have a service accidentally configured with both instances as available and none as preferred: $ srvctl config service -d dbname -s servicename.example.com servicename.example.com 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 -- //www.freelists.org/webpage/oracle-l