NOTE

       Use these qualifiers to reconcile the information in the
       database root file with the storage area files on disk.
       These values can get out of synchronization when changes
       have been made to storage areas or snapshot files after the
       backup from which you are restoring the database root file
       was created.

       Setting these parameters updates the data in the root file
       only; it does not change the attributes of the storage areas
       or snapshot files themselves.