Databases Reference
In-Depth Information
configure default device type to disk
means that by default RMAN sends backup
output to a disk drive.
•
configure controlfile autobackup off
means that by default RMAN doesn't automatically
back up the control files when it performs a backup task.
•
configure device type disk parallelism 1 backup type to backupset
means that
the default RMAN backup type is a backup set (and not an image copy) and the degree of
parallelism is 1.
•
•
configure datafile backup copies for device type disk to 1
means that by default
RMAN doesn't make multiple copies of a backup file.
•
configure maxsetsize to unlimited
means that there's no limit on the size of a backup set
by default.
•
configure encryption for database off
means that by default RMAN backups aren't
encrypted.
Notice that the output of the
show all
command shows the existing RMAN configuration in the form of RMAN
commands to re-create that configuration. Therefore, if you are planning to use the same type of configuration on a
different database, just save the output from the
show all
command to a text file that you can then execute from the
RMAN command line after connecting to the target database to which you're planning to migrate those settings.
You can view information about RMAN's persistent configuration settings by querying the
V$RMAN_CONFIGURATION view, as shown here:
SQL> select * from v$rman_configuration;
CONF# NAME VALUE
---------- ------------------------------ -------------------------
1 RETENTION POLICY TO REDUNDANCY 3
2 BACKUP OPTIMIZATION ON
3 DEFAULT DEVICE TYPE TO sbt_tape
4 CONTROLFILE AUTOBACKUP ON
5 DEVICE TYPE DISK PARALLELISM 2
5 rows selected.
The NAME column in the V$RMAN_CONFIGURATION view shows the type of RMAN configuration, and the
VALUE column shows the present
configure
command setting for that type, for example,
configure retention
policy to redundancy 3
, in our example here.
■
Note
the v$RMAN_CoNfiguRAtioN view shows only those parameters for which you've set a nondefault value.
Configuring RMAN
Problem
You want to configure RMAN to suit the requirements of the particular backup and recovery strategy you choose to
implement in your organization.
