Fatal error, the output file is  not  deleted  but  may  not  be
  useable,<num> records have been unloaded.

  Explanation:  A non  recoverable  error  was  encountered.   The
  output  file  was  not deleted.  However, depending on the error
  the output file may not be useable.

  User Action:  Locate and correct  the  source  of  the  original
  error.