Hi, I am looking for information on specific issues or problems that may be encountered when migrating Oracle RDB to Oracle 8/8i/9i/10g and how they can be dealt with. Of particular interest are issues encountered with the gradual approach, where tables are moved on an application by application basis. I have read the Oracle Metalink note below, but this only talks about the high level strategies that can be employed. http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_d atabase_id=NOT&p_id=135929.1 Thankyou, Chris Borrill