Hi List, Does anyone know why creating/refreshing MViews cause ORA-1650 in the remote database? Is it because of updatable MView? Is it for MView log changes? Thanks, Roger Xu P.S. local: Oracle 10g 10.2.0.3.0 Windows 2008 remote: Oracle 9i with rollback segment 9.2.0.7.0 HP-UX create snapshot foo pctfree 0 pctused 90 refresh fast with rowid for update as select whatever from foo@remote_db; ORA-1650: unable to extend rollback segment R10 by 4096 in tablespace RBS_TS_01 Failure to extend rollback segment 16 because of 1650 condition FULL status of rollback segment 16 set.