standby database storage area signature does  not  match  master
  database

  Explanation:  The number of storage area slots ("reserved"),  or
  the  specific  storage area page size, are not identical on both
  the master and standby databases.

  User Action:  Make sure both the  master  and  standby  database
  storage  area  configurations  are identical.  Do not change any
  storage area page size when restoring the databases.