Oracle Message ORA-07625 - smsget: $MGBLSC failure

ERRORsmsget: $MGBLSC failure
CAUSEWhile mapping the system global area (SGA) during logon, VMS system service $MGBLSC failed. The usual reason is that Oracle has not been started up.
ACTIONExamine the system error message and refer to VMS documentation. Start up Oracle if it is not already started.