SYSMAN> DUMP_PRIORITY UNLOAD
  SYSMAN> DUMP_PRIORITY SHOW
  %SMI-F-SDPNOTLOAD, System Dump Priority not loaded

      Following a DUMP_PRIORITY UNLOAD command, the DUMP_PRIORITY
      SHOW command in this example displays the message that the
      System Dump Priority registry no longer has an in-memory copy
      of the file.