"orclXDB" is needed for XML database, and is set by DISPATCHERS initialization parameter. Try, as sysdba SQL> show parameter DISPATCHERS "orcl_XPT" : in 10g a service with name _XPT is automatically configured in addition to normal service names, and is intended for use within Data Guard environments. alter sytem set "__dg_broker_service_names" = '' ; 히든파라미터 보기 set lines 140 col parameter format..