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Br Backup with Online_split

We are in the process of implementing online_split backup method for a large database that we currently have. Is it possible to just split the mirror without BR trying to actually back it up to either Disk or the tape? We would like to split the mirror using BR*Tools(this way SAP will be aware about the backup) and then let the Script do the rest of the process, i.e. mounting the disk to another backup server and start the backup?

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  • Posted on Oct 19, 2006 at 10:27 PM

    Hi Anup,

    there are many options for the configuration of split mirror backups.

    https://service.sap.com/dbaorahttps://service.sap.com/dbaora">https://service.sap.com/dbaora>

    -> There's a own link for it. (split-mirror)

    Also the BRBACKUP documentation provides good information about the configuration:

    Split" target="_blank">http://help.sap.com/saphelp_nw2004s/helpdata/en/0c/cd271365debc42bef96ac7fd907787/frameset.htm">Split Mirror Backup

    Anyhow, BRBACKUP is a BACKUP Tool. It will start a Backup.

    For the split itself you HAVE to provide a script (param split_cmd), but the backup is triggered and/or done by BRBACKUP. But if you want to use a 3rd party vendor backup tool that supports backint for Oracle that would be no problem, since these backup tools can be triggered by brbackup.

    The other thing is: what do you expect from the WAS to do with the information, that a backup is beeing done?

    Basically the application servers don't care at all about it (you see that e.g. when scheduling a offline backup in DB13 - the workprocesses try to reconnect all the time as if they don't know that a offline backup is running, and in fact they don't know!).

    So, if you don't like BRBACKUP - fine, don't use it. As long as the Databse is online while the backup is taken, the worst thing that can happen is that some sessions hang a moment, until the DB is allowed to write again, after the split is complete. That won't do harm to the application server.

    Hope that helps,

    Lars

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  • author's profile photo Former Member
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    Posted on Oct 20, 2006 at 01:23 PM

    What are my options for SAP Large database backups? Can we go with a Non-SAP certified backup and still be ok?

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