Hi, Our Oracle 9.2.0.1 <http://9.2.0.1> production database is running on a RedHat AS2.1 We would like to have a Standby database, but the sysadmin already installed the server with Linux ES4.0. Usually, the platform has to be the same. Should I ask the sysadmin to reinstalled the server ? Thanks Luc -- Luc Demanche Oracle DBA (514) 867-9977