List, We are planning to move one of our highly OLTP Oracle 10gR2 database on AIX from single instance to 2 node RAC. I just would like hear from any of one here about the issues or potential problems when moved from a single instance to RAC. I would be gald if you guys share you experince or throw some limelight or tips. Thanks your time, -- Best Regards, Syed Jaffar Hussain Oracle ACE 8i,9i & 10g OCP DBA http://jaffardba.blogspot.com/ http://www.oracle.com/technology/community/oracle_ace/ace1.html#hussain ---------------------------------------------------------------------------------- "Winners don't do different things. They do things differently."