ignoring NOLOGGING - Hot Standby is enabled and logging required

  Explanation:  This is an informational message reported  to  the
  user  when  NOLOGGING  is  partially ignored.  HOT STANDBY needs
  full logging to function correctly.

  User  Action:   No  user  action  is  required,   but   database
  administrators  should note that full logging is still in use to
  the after image journal.  Only  logging  to  the  recovery  unit
  journal is disabled.