backup_dev_type

Determines the backup medium that you want to use.

Syntax: backup_dev_type = disk|tape|pipe|tape_auto|pipe_auto|tape_box|
pipe_box|disk_copy|disk_standby|util_file|util_file_online|stage|
stage_copy|stage_standby|rman_prep|rman_util|rman_disk|rman_stage

Default: tape

Possible values:

·        disk: Database backups to disk.

The directory that should be used for the backups is defined in parameter backup_root_dir or archive_copy_dir.

·        tape: Use one or more local tape devices.

·        pipe: Backup to a remote system using the commands entered in the profile parameters remote_host, remote_user, copy_in_cmd, and copy_out_cmd. All the functions that are available for a local backup on tape are also available here, but only on UNIX.

·        tape_auto: Use of a local tape device with a tape changer. The prompts for changing the volumes are suppressed.

·        pipe_auto: Use of a tape device with a tape changer on a remote system. The prompts for changing the volumes are suppressed. When you use this parameter specification, do not forget to set the parameters copy_in_cmd, copy_out_cmd, remote_host and remote_user appropriately.

The parameters tape_auto and pipe_auto generally have no effect on BRARCHIVE, since that program does not support continuation tapes.

·        tape_box: Use of jukeboxes and autoloader. The accompanying tape devices must be locally accessible.

·        pipe_box: Use of jukeboxes and autoloader. The accompanying tape devices must be remotely accessible (remote_host, remote_user).

For all tape device types, the drivers defined in the parameter tape_address or tape_address_arch are used for the data transfer (cpio, dd). For the rewind those defined in the parametertape_address_rew or tape_address_arch_rew_ are used.

·        disk_copy: Copying of database files to a disk with an identical directory structure. The name of the new Oracle_Home directory is defined in the parameter new_db_home. See Structure-Retaining Database Copy.

·        disk_standby: Copying of database files to a disk with an identical directory structure (compare disk_copy). To let you construct a standby database, a standby control file is generated and copied. See Standby Database Configuration.

·        util_file: Backup or restore is carried out file-by-file using the backup program specified by the BACKINT interface program

·        util_file_online: (if supported by the manufacturer of the external backup program) backup is made file-by-file using an external backup program addressed by the BACKINT interface. The backup status is also set and ended dynamically for the tablespaces to be saved in an online backup. This value can also be set for an offline backup, in which case the database is not stopped before calling BACKINT. Instead, it is stopped when the first file is about to be backed up by BACKINT and started again after the last file has been saved.

The parameter util_file allows you to use other storage media (for example, optical media), provided the supplier provides corresponding backup programs and a BACKINT interface. In such cases, the SAP utilities can call the external backup program for the physical backup or restore of the corresponding files. If parameter util_file_online is used, the volume of offline redo log files is also significantly reduced during an online backup. See External Backup Programs.

Ask the supplier of the non-SAP backup programs and the interface BACKINT for any additionally required parameters for the backup program call. If necessary, store this information in an appropriately maintained parameter file, which you should also enter in the parameter util_par_file or the command option -r|-parfile of the SAP utilities.

·        stage: Backup to a remote disk. This can be used for standard backups with BRBACKUP, for incremental backups while using the RMAN functions. See Backup to a Remote Disk.

·        stage_copy: Copying of database files to a remote disk with an identical directory structure. The name of the new Oracle_Home directory is defined in the parameter stage_db_home.

·        stage_standby: Copying of database files to a remote disk with an identical directory structure (compare disk_copy). To let you construct a standby database, a standby control file is generated and copied.

·        rman_prep: The best distribution of the files to save sets is determined before a RMAN backup to tape with file multiplexing.
See RMAN Save-Set Grouping.

·        rman_util: RMAN backup in combination with a backup library and the backup tool of another manufacturer. BACKINT provides an interface to the external backup tool and is also used to back up profiles, log files and the control file.
See RMAN Backup with an External Backup Library.

·        rman_disk: Backup with an external backup library and RMAN, but without BACKINT. Profiles and log files are copied to local disk.

·        rman_stage: Backup with an external backup library and RMAN, but without BACKINT. Profiles and log files are copied to local disk.