Backup with Automatic Tape Changers (SAP Library - SAP Database Guide: Oracle (BC-DB-ORA-DBA))

Backup with Automatic Tape Changers

Use

In addition to standard backups to local disks or tapes, BRBACKUP supports several types of Oracle backup with automatic tape changers, such as autochangers, autoloaders, jukeboxes, or tape robots.

Features

The following table shows the types of backup supported by BRBACKUP:

Backup type		Parameter
Local disks		disk
Local tape devices with manual tape swapping		tape
Remote tape devices with manual tape swapping		pipe
Automatic sequential tape swapping: autochangers or autoloaders	Local tape devices	tape_auto
	Remote tape devices	pipe_auto
Fully automatic tape swapping: jukeboxes or tape robots	Local tape devices	tape_box
	Remote tape devices	pipe_box

The following commands are used to define automatic mounting and dismounting of tapes in the backup device:

mount_cmd

dismount_cmd

These commands enable you to administer hundreds of tapes in jukeboxes and autoloaders. For more information, see Mount and Dismount Commands.

Activities

You can set the parameters from the above table in either of the following ways:

In the backup_dev_type parameter of the Initialization Profile init<DBSID>.sap

In the -d|-device command option of BRBACKUP (this overrides the initialization profile)

Some devices with automatic tape changing require additional time to change the tape. This additional time can be taken into account by adjusting rewind_offline. To do this, you can enter a command like the following:

rewind_offline = "mt -t $ offline && sleep 60"

See also:

Autoloader Backup Example