Why wouldn't you upgrade all instances to the latest version first, then apply the database upgrade after all instances are up? This would allow for no database downtime. --Tom On Wed, 29 Mar 2006, Mercadante, Thomas F (LABOR) wrote: > But see, all of this is *not* RAC! And the RAC sales pitch *always* > sells rolling upgrades and "your database is never down". > > > > Lies and obfuscations! -- //www.freelists.org/webpage/oracle-l