If you don't specify the FORMAT clause for disk backups, then RMAN makes backup items and picture copies from the speedy Restoration space, with names in Oracle Managed Files title structure.
As described in "Backup Retention Policies", the backup retention plan specifies which backups needs to be retained to satisfy your data Restoration necessities. This coverage is usually determined by a recovery window or redundancy. Utilize the CONFIGURE RETENTION POLICY command to specify the retention policy.
When you have verified that the databases server can load the media management library, take a look at making sure that RMAN can back up to your media supervisor.
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The REDUNDANCY parameter of your CONFIGURE RETENTION Plan command specifies the quantity of total or stage 0 backups of every information file and Handle file that RMAN really should retain.
On February 21, when you challenge a command to again up tablespace tools to tape, RMAN backs it up Although it did not change once the January 3 backup (as it is read through-only). RMAN makes the backup simply because no backup on the tablespace exists within the 7-working day Restoration window.
When backing approximately disk, the logical block size in the database file should be an excellent a number of with the physical block sizing in the location system. Such as, a device of sort DISK by using a block dimensions of 2 kilobytes can only be used as being a location for backups of databases files with rational block sizes of two KB, 4 KB, six KB, and the like.
Due to the fact RMAN can create a picture copy only to disk, the backup variety for tape can only be considered a backup established.
The RECOVERY WINDOW parameter on the CONFIGURE command specifies the number of times amongst The existing time along with the earliest position of recoverability. RMAN would not consider any total or stage 0 incremental backup as obsolete if it falls in the recovery window.
When you disable the retention coverage and operate REPORT OBSOLETE or DELETE OBSOLETE commands without passing a retention plan option to the command, then RMAN problems an error simply because no retention coverage exists to determine which backups are out of date.
Archived redo logs may be deleted immediately because of the database or by user-initiated RMAN commands. Only logs while in the speedy Restoration space is often deleted automatically because of the database. For archived redo log files inside the rapid Restoration area, the database retains them as extended as you can and instantly deletes eligible logs when more disk House is necessary.
Otherwise, RMAN could skip backups because of optimization index without the need of recognizing that the media supervisor has discarded backups important link saved on tape.
If supplying this A lot Area is impractical, then it's best to create a location large enough to keep a backup in the most vital tablespaces and each of the archived logs not however on tape. At an absolute least, the speedy recovery location have to be large enough to comprise the archived redo logs not nonetheless on tape.
This area describes how to configure channels to be used which has a media supervisor. For an outline of configured channels And just how They can be used, check with the area "Configuring Superior Channel Options".