standby database AIJ signature does not match master database

  Explanation:  The number of AIJ journal slots  ("reserved"),  or
  the specific journal allocation sizes, are not identical on both
  the master and standby databases.

  User Action:  Make sure both the master and standby database AIJ
  journal  configurations  are  identical.   Ensure  that  the AIJ
  journal device "cluster size" is identical on  both  the  master
  and standby databases.