Understanding Recovery Manager
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Published: 12 Dec 2007
In this article the author describes what Recovery Manager (RMAN) is, how it can be used for database backup and recovery, what the requirements are for using it, and what the advantages and disadvantages of using it are.
by Debjani Mallick
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Recovery Manager (RMAN) is a utility in Oracle that is generally used to backup, restore or recover database files. It performs backup and recovery by using database server sessions. The metadata about its operation may be stored in a control file of the target database or in recovery catalog schema in Oracle database. By default, RMAN automatically stores the metadata in the control file of the target database; so using a recovery catalog database is fully optional though it is encouraged to use a recovery catalog database so that if the production machine fails, we have the operations information in the catalog on a separate machine.

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