Parallel Backups (NetWorker) (SAP Library - External Backup Tools: SAP DB)

Parallel Backups (NetWorker)

Prerequisites

You have configured the NetWorker connection in accordance with the specifications in Configuring the NetWorker Connection.

The following table shows from which SAP DB versions parallel backups and restores are possible with NetWorker.

SAP DB Version	Build	SAP DB Tools for Parallel NetWorker Backups	SAP DB Tools for Parallel NetWorker Restores
7.2.05	004	DBMCLI	DBMCLI
7.3.00	009 015 025	DBMCLI, DBMGUI DBMCLI, DBMGUI DBMCLI, DBMGUI, Web DBM	DBMCLI DBMCLI, DBMGUI DBMCLI, DBMGUI, Web DBM
7.3.32	000	DBMCLI, DBMGUI	DBMCLI, DBMGUI
7.4.02	000 011	DBMCLI, DBMGUI DBMCLI, DBMGUI, Web DBM	DBMCLI, DBMGUI DBMCLI, DBMGUI, Web DBM
7.4.03	000 002	DBMCLI, DBMGUI DBMCLI, DBMGUI, Web DBM	DBMCLI, DBMGUI DBMCLI, DBMGUI, Web DBM

See also:

User Manual: SAP DB, sections Operating System Platforms, and SAP DB Versions and Database Instance Types.

You must configure a media group with the Database Manager, the individual members of which conform to the conventions described in backup medium. In particular, every media group name must begin with NSR.

Parallel backups are only possible for data backups (complete and incremental).

Requirements

The NetWorker command SAVE or RECOVER is started for each pipe. NetWorker requires the exact name of each backup pipe for a restore. The media group must therefore be configured in exactly the same way during the restore as during the backup. This includes the order of the media in the media group.

The number of tape drives should be the same as the number of pipes used for the backup.

Set the NetWorker parameter Target Sessions for each tape drive to 1.

Procedure

If you want to perform a parallel backup or restore, follow the procedure described in the following documentation:

Database Manager GUI: SAP DB 7.4, sections Saving to a Group of Parallel Backup Media and Recovery.

Database Manager CLI: SAP DB 7.4, sections Commands for Backups and Commands for Restoring.

Note

If a deadlock occurs during a parallel restore, you must import the backup sequentially (that is, from the individual media in the media group) using the Database Manager. Test this procedure.