Default  RUJ  filename  "<str>"  does  not   contain   a   valid
  device/directory

  Explanation:   The  default   recovery-unit   journal   filename
  specified  in  the  root  file  does  not contain a valid device
  and/or directory.  This may be detected during an RMU Convert of
  a  database.   In  order  for  the  conversion to complete it is
  necessary for RMU to clear  the  default  recovery-unit  journal
  filename field in the root file.

  User Action:  After the conversion has completed,  use  the  SQL
  ALTER  DATABASE  statement  to  set  a new recovery-unit journal
  filename.