HELPLIB.HLB  —  RMU72  RMU_ERRORS, CANTCLOSEDB
  database could not be closed as requested

  Explanation:  The  database  monitor  detected  an  error  while
  attempting to close the database you specified.

  User Action:  Examine the secondary message(s) or  look  in  the
  database   monitor   log  file  (SYS$SYSTEM:*MON.LOG)  for  more
  information.
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