11g services do replace the instance_groups/parallel_instance_group parameters. You define which nodes the service runs on, and which instances it includes. So yes, you can define a 1 node, 1 instance service to limit PX to that node. For example: srvctl add service -d <db name> -s <service name> -r <instance list> On Tue, Jul 14, 2009 at 10:10 PM, hrishy<hrishys@xxxxxxxxxxx> wrote: > Hi > > I came across a statement from a fellow DBA saying parallel queries now run > acording to service placement does this mean that if i have a services > called dw on node 1 only that parallel queries qould not spawn on other > nodes ? > > regards > Hrishy > -- Regards, Greg Rahn http://structureddata.org -- //www.freelists.org/webpage/oracle-l