Contents
- 1 How do I protect my database from recovery catalog?
- 2 What is the purpose of the RMAN recovery catalog?
- 3 How do I catalog a RMAN backup piece?
- 4 How do I create a recovery catalog in Oracle 12c?
- 5 What does a recovery catalog do for a database?
- 6 When do you need a Data Guard recovery catalog?
- 7 How to create a recovery catalog for RMAN?
How do I protect my database from recovery catalog?
Back up the recovery catalog with the same frequency that you back up the target database. For example, if you make a weekly whole database backup of the target database, then back up the recovery catalog immediately after all target database backups, in order to protect the record of the whole database backup.
What is the purpose of the RMAN recovery catalog?
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.
What is RMAN recovery catalog?
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 creates redundancy for the RMAN repository stored in the control file of each target database.
How do I catalog a RMAN backup piece?
CATALOG. Use the CATALOG command to do the following: Add backup pieces and image copies on disk to the RMAN repository. Record a data file copy as a level 0 incremental backup in the RMAN repository, which enables you to use it as part of an incremental backup strategy.
How do I create a recovery catalog in Oracle 12c?
How to create the catalog in Oracle 12c
- Create a tablespace to hold the RMAN data by typing in SQL*Plus:
- Type the following to create the catalog owner:
- Grant appropriate privileges:
- From a terminal window, log in to the recovery catalog with the owner and create the catalog:
How do I catalog backup pieces in RMAN?
What does a recovery catalog do for a database?
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.
When do you need a Data Guard recovery catalog?
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.
How many megabytes are in the recovery catalog?
If you assume that each row in the backup piece table uses the maximum amount of space, then one daily backup consumes less than 170 kilobytes in the recovery catalog. So, if you back up once a day for a year, then the total storage in this period is about 62 megabytes.
How to create a recovery catalog for RMAN?
The basic steps for setting up a recovery catalog for use by RMAN are as follows: Create the recovery catalog. ” Creating a Recovery Catalog ” explains how to perform this task. Register your target databases in the recovery catalog. This step enables RMAN to store metadata for the target databases in the recovery catalog.