This won't work - they both would expect to be the only clusterware on the machine. Matt -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Brian Sent: Mon 11/16/2009 11:08 AM To: oracle-l@xxxxxxxxxxxxx Subject: 10g and 11g clusterware on same nodes Hi all, Has anyone ever deployed both 10g and 11g clusterware on the same nodes using a different Linux owner/account for each? The clusterware would share the same interconnect but use different VIPs on the same bonded NICs. The clusterware would not manage nor use the same shared storage. Thanks, Brian