Entering content frameFunction documentation Split-Mirror Offline Backup Locate the document in its SAP Library structure

Use

This section describes how you can use BRBACKUP to perform a split-mirror offline backup with your Oracle database.

In an offline backup the database is shut down to split the mirror disks. Therefore, it is considerably faster than a normal offline backup, in which the database is shut down for the duration of the entire backup.

Prerequisites

You set the following parameters in the initialization profile init<DBSID>.sap:

Instead of backup_type, you can enter the BRBACKUP command option -t|-type as shown below in "Activities." The BRBACKUP command option takes priority.

Activities

You start BRBACKUP on the backup host using the following command :

brbackup -t offline_split

For more information, see -t|-type.

BRBACKUP then performs the following steps:

  1. Shuts down the database on the productive host, in order to guarantee the consistency of the database for an offline backup.
  2. Splits the mirror disks using split_cmd.
  3. Restarts the database on the production host, so that it is again available for the SAP System.
  4. Backs up the mirror disks offline on the backup host.
  5. If you have set resync_cmd, synchronizes the mirror disks with the originals.

 

See also:

Split-Mirror Backup: Software Configuration

Leaving content frame