Recovery Manager (RMAN)

An application used for backing up, restoring, and recovering Oracle databases is called Oracle Recovery Manager (RMAN). For Oracle databases, RMAN offers a complete backup and recovery solution, including full backups, incremental backups, and backups of particular database components.

You must connect to the target database and set aside a channel before you can run an RMAN backup. The channel can be assigned manually or automatically by RMAN, and it can be a disc or tape device. Once the channel has been assigned, you can start the backup procedure using the backup command.

You can specify different parameters with the backup command, including the backup type, backupset size, and compression level. For instance, you can use the following command to backup the database completely:

shell

RMAN>  backup database;

You can use the following command to carry out an incremental backup:

 

 

RMAN> backup incremental level 1 database;

  The backup is examined for consistency and restoreability using the validate command.

You must connect to the target database and set aside a channel before you can restore a backup. The database can then be restored using the restore command. You can specify other options with the restore command, including the restoration type and backupset location. For instance, you may use the following command to restore a database backup in its entirety:

shell

 

RMAN> restore database; 

After a restore, you can use the recover command to restore the database. To bring the database up to date, the recover command applies any necessary redo logs to the restored backup. For instance, you can use the following command to restore the database after a restoration:

 

 

RMAN> recover database;

For Oracle databases, RMAN offers a strong backup and recovery solution that enables you to execute full backups, incremental backups, and backups of particular database components. The validate and recover commands make sure that the backup is valid and the database is current while the backup and restore commands let you personalise the backup and restore procedure.

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