1. þ A, D, and E. Using a recovery catalog allows you to create and maintain
stored scripts. In addition, it keeps a running history of all changes to the
database tablespaces and datafiles because the recovery catalog was created.
Finally, you can store recovery information for more than one database in a
recovery catalog.
ý B and C. B is not a good reason to use a recovery catalog because the
RMAN repository information is always stored in the controlfile even if
you use a recovery catalog. C is also not a good reason, because a recovery
catalog requires more setup and maintenance in addition to a backup of
another database. Also, the controlfile is simpler to manage, and its size can
be controlled with the parameter CONTROL_FILE_RECORD_KEEP_TIME.
It is much simpler to export a copy of the controlfile whenever the database
structure changes using ALTER DATABASE BACKUP CONTROLFILE TO
TRACE.
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