TAILIEUCHUNG - RMAN Backups

Types of Recovery Manager Backups Recovery Manager provides functionality to back up: The entire database, every datafile in a tablespace, or a single datafile The control file All or selected archived logs Note: The online redo log files are not backed up when using Recovery Manager. Closed Database Backups A closed database backup is defined as a backup of the database while it is closed (offline). This is the same as the consistent database backup. If you are performing a closed backup, the target database must not be open. If you are using a recovery catalog, the recovery catalog database must be open. Open Database Backups An open. | RMAN Backups Objectives After completing this lesson, you should be able to do the following: Identify types of RMAN specific backups Use the RMAN BACKUP command to create backup sets Back up the control file Back up the the archived redo log files Use the RMAN COPY command to create image copies RMAN Backup Concepts Recovery Manager backup is a server-managed backup Recovery Manager uses Oracle server sessions for backup operations Can back up entire database, all datafiles in a tablespace, selected datafiles, control files, archived redo log files Closed database backup Target database must be mounted (not open) Includes datafiles, control files, archived redo log files Open database backup Tablespaces should not be put in backup mode Includes datafiles, control files, archived redo log files Types of Recovery Manager Backups Recovery Manager provides functionality to back up: The entire database, every datafile in a tablespace, or a single datafile The control file All or selected archived logs Note: The online redo log files are not backed up when using Recovery Manager. Closed Database Backups A closed database backup is defined as a backup of the database while it is closed (offline). This is the same as the consistent database backup. If you are performing a closed backup, the target database must not be open. If you are using a recovery catalog, the recovery catalog database must be open. Open Database Backups An open database backup is defined as a backup of any portion of the database while it is open (online). Recovery Manager uses server processes to make copies of datafiles, control files, or archive logs. When using Recovery Manager, do not put tablespaces in backup mode using the ALTER TABLESPACE . BEGIN BACKUP command. RMAN reads a block until a consistent read is obtained. ArchivedLog file Datafile 3 Recovery Manager Backups Copy of datafile 3 Copy of archived log Image copy Backup set Backup set 1 Backup set 2 Backup set 3 Datafile 4 .

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