What is the purpose of the RMAN recovery catalog? (Choose all that apply.)
A.
Make backups faster
B.
Store RMAN metadata
C.
Store RMAN scripts
D.
Provide the ability to do centralized backup reporting.
E.
Make recovery faster
Explanation:
A recovery catalog is a database schema used by RMAN to store metadata about one or more Oracle
databases. Typically, you store the catalog in a dedicated database. A recovery catalog provides the following
benefits:
A recovery catalog creates redundancy for the RMAN repository stored in the control file of each target
database. The recovery catalog serves as a secondary metadata repository. If the target control file and all
backups are lost, then the RMAN metadata still exists in the recovery catalog.
A recovery catalog centralizes metadata for all your target databases. Storing the metadata in a single place
makes reporting and administration tasks easier to perform.
A recovery catalog can store metadata history much longer than the control file. This capability is useful if you
must do a recovery that goes further back in time than the history in the control file. The added complexity of
managing a recovery catalog database can be offset by the convenience of having the extended backup history
available.
Some RMAN features function only when you use a recovery catalog. For example, you can store RMAN
scripts in a recovery catalog. The chief advantage of a stored script is that it is available to any RMAN client that
can connect to the target database and recovery catalog. Command files are only available if the RMAN client
has access to the file system on which they are stored.
A recovery catalog is required when you use RMAN in a Data Guard environment. By storing backup metadata
for all primary and standby databases, the catalog enables you to offload backup tasks to one standby
database while enabling you to restore backups on other databases in the environment.