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Oracle Recovery Manager (RMAN) Introduction

Discussion in 'Server Administration and Options' started by Anne, Aug 15, 2008.

  1. Anne

    Anne Forum Advisor

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    Understanding Oracle Recovery Manager (RMAN)

    Oracle Recovery Manager (RMAN) is basically an automated data backup procedure. In businesses of all sizes, there is always a concern about system monitoring, backup and recovery with regard to data relating to day to day business activities. If there is suddenly a complete data loss, then this can not only have an adverse impact financially but it can also cause loss of valuable working time as well. In order to reduce the above mentioned types of risk, one can implement Oracle Recovery Manager (RMAN) for his or her business. Oracle Recovery Manager (RMAN), can be considered as a command-line and Enterprise Manager based tool. It is Oracle’s preferred method for efficiently backing up and recovering your Oracle database. RMAN is actually designed to work intimately with the server and it provides block-level corruption detection during backup and restore.

    Oracle Recovery Manager (RMAN) can optimize the performance and space consumption during backup with file multiplexing and backup set compression. It also has the ability to integrate with Oracle Secure Backup and third party media management products for tape backup. R MAN looks after all underlying database procedures before and after backup or restore. It facilitates a common interface for backup tasks across different host operating system, and it offers unique features that are not usually available through user-managed methods. For example : Parallelization of backup/recovery data streams, backup files retention policy and detailed history of entire backups.

    The utilities and databases of RMAN environment play an important step of backing up your data. The environment of RMAN includes the following things:

    1. The target database required to be backed up.
    2. The RMAN client interprets backup and recovery commands and it directs the server sessions in order to execute those commands. It also records the concerned backup and recovery activity which is in the database.


    The R MAN environment is also likely to use optional components, such as :
    1. A disk location in which the database can be in a position to store and manage files that are related to backup and recovery.
    2. RMAN may also require Media management Software, in order for R MAN to interface with backup devices.

    RMAN has the capability of providing the following features.
    1. It can undertakes hot backups of the entire database to disk.
    2. It can delete back-ups from disks that have turned more than one day old.
    3. It can complete daily backup archive logs.
    4. It has the provision to delete archive logs that have been successfully backed up.
    5. It also provides a verification and notification step, saying that the backup has been successfully executed.
     
  2. Arju

    Arju Forum Expert

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    In your there is space between R and MAN. It will be RMAN not R MAN.
     
  3. Anne

    Anne Forum Advisor

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    :) thanks for pointing that out! it was a typo!
     
  4. coventry

    coventry Active Member

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    Oracle Recovery Manager (RMAN), a command-line and Enterprise Manager-based tool, is the Oracle-preferred method for efficiently backing up and recovering your Oracle database. RMAN is designed to work intimately with the server, providing block-level corruption detection during backup and restore. RMAN optimizes performance and space consumption during backup with file multiplexing and backup set compression, and integrates with Oracle Secure Backup and third party media management products for tape backup.
    RMAN takes care of all underlying database procedures before and after backup or restore, freeing dependency on OS and SQL*Plus scripts.
    Magic Backup