Using RMAN to perform recovery

To recover a database we have two steps:
1-Retrieving a copy of the datafile from a backup "Restore".
2-Retrieving a copy of the datafile from a backup "Recover".

This should bring the database to the destired SCN (usually the most recent one).

The Restore command retrieves the datafile onto disk from a backup location on tape, disk, orother media, and makes it available to the database server. RMAN restores from backup any
archived redo logs required during the recovery operation. If backups are stored on a media
manager, channels must be configured or allocated for use in accessing backups stored there.

The Recover command  takes the restored copy of the datafile and applies to it the changes

recorded in the database’s redo logs.

Comparing Complete and Incomplete Recovery