If you lose your entire Oracle database system (possibly including hardware), and have not taken any special security precautions - such as setting up a Standby Database - then you have to recover the system as much as possible, step by step. This section describes how to begin reinstalling the system in the event of such a disaster, and how to keep data loss to a minimum by using BRRECOVER.
Note
This section discusses how to approach disaster recovery.
For more information about how to perform disaster recovery, see Disaster Recovery with BR*Tools.
You can only restore profiles and log files using this function. This is a preparation step for subsequent database recovery with one of the following:
SAP and Oracle software is correctly installed
The file systems – that is, sapdata<x> directories – exist and are configured as before the disaster.
The following graphic shows how disaster recovery works:
Select restore from BRBACKUP or BRARCHIVE backup.
You select the BRBACKUP or BRARCHIVE backup that contains the required profiles and logs.
Select restore device type phase
You select the device to be used from the following possibilities:
Local tape
Remote tape
Local disk
Remote disk
Backup utility
Specify restore parameters phase
Depending on your choice of restore device type, you specify appropriate restore parameters.
Select profiles and log files phase
You select the profiles and log files that you want to restore from the following:
BACKINT / mount profile – for more information, see util_par_file
Detail log from one of the following:
Summary log from one of the following
Restore selected profiles and log files phase
BRRECOVER directly restores the selected profiles and log files without calling BRRESTORE.
Select detail logs for restore phase
You select the detail logs that you want to restore. You can only select logs on the selected restore device type, such as a disk or external backup tool (BACKINT). For tape device type, the details logs are determined by the mounted tape volume.
Restore selected detail logs phase
BRRECOVER directly restores the selected detail logs from the disk, tape, or external backup tool without calling BRRESTORE.