Hi, This is Oracle 10g. SQL> select owner, object_name, object_type 2 from all_objects where object_name = 'EMPS'; OWNER OBJECT_NAME OBJECT_TYPE ------------------------------ -------------------- ------------------- PUBLIC EMPS SYNONYM SCOTT EMPS MATERIALIZED VIEW SCOTT EMPS TABLE Having all these with the same name, how do I know what I am accessing? scott.emps refers to the MV or the table? Thanks, Roger Xu