after-image journals cannot be backed up  due  to  unrecoverable
  data loss

  Explanation:  An attempt was made  to  back  up  an  after-image
  journal after loss of AIJ data has occurred.  One or more of the
  following events may have occurred:  1.  An inaccessible journal
  was   deleted.    2.   A  modified  journal  was  deleted  while
  journalling was disabled.  3.  A journal  was  overwritten.   4.
  Journal switch-over failed.

  User  Action:   A  full  database  backup  must  be  immediately
  performed to make the database recoverable again.