I wonder if anyone has seen this before 1 select constraint_name,table_name from all_constraints 2* where constraint_type='?' SQL> / CONSTRAINT_NAME TABLE_NAME ------------------------------ ------------------------------ SYS_C001088 AQ$_REPLAY_INFO We don't use AQ. its a 9206 SE database. -- Niall Litchfield Oracle DBA http://www.niall.litchfield.dial.pipex.com -- //www.freelists.org/webpage/oracle-l