The number of writer threads has been adjusted to <num>.

  Explanation:   The  /WRITER_THREADS  value  exceeds  either  the
  number  of  database  storage  areas  or  the  number  of output
  devices.  This would create writer threads with no work  to  do.
  The value is being changed to the largest possible valid value.

  User Action:  None.  To avoid this message specify the number of
  writer threads displayed in this message.