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full backup (level 0) with RMAN

sreenu1983
Explorer
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Dear Experts,

We would like to use RMAN for both full backups (level 0) and incremental backups (level 1) via Brtools.

RMAN Incremental backups support using BRBACKUP. RMAN full backups don't support using BRBACKUP, right? Please confirm.

Actually our intention here is to make use of the RMAN function "block change tracking (BCT)" as this should not be possible with full backups using BRBACKUP.

Thanks & best regards

Sreenivas

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Answers (1)

Answers (1)

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Hi Sreenivasa,

BR*Tools does support the Full backups via RMAN. This is also documented in the official HELP guide below:

-m|-mode | SAP Help Portal

In addition, the configuration (also related to Block Change Tracking) is described in below SAP note:

https://launchpad.support.sap.com/#/notes/964619

sreenu1983
Explorer
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Hi Janos,

Thank you for your response to my Query.

In your below URL link, i notice that there is no information explicitly mentioned that full database backups (level 0) can be performed via RMAN:

-m|-mode | SAP Help Portal

Could you please let us know, where exactly mentioned that RMAN Full backup can be executed via BR Tools? Thank you.

Additionally, the below URL link mentioned that "BRBACKUP supports incremental backup with the Oracle Recovery Manager (RMAN)."

Incremental Backup

And also, from SAP note: 964619, it is mentioned that we need to have a "genuine RMAN level 0 backup" using RMAN and not with the option of cataloging a non-RMAN backup as a level 0 RMAN backup using BRBACKUP. So, in this case, if i understood correctly, cataloging a non-RMAN backup doesn't activate the BCT (Block Change Tracking) feature.

Best regards

Sreenivas

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Hi,

No problem. The "-m" mode allows to execute "Level 0" backup while "-m full" is specified within brbackup. Also, "Level 1" backup corresponds to option "-m incr".

If you scroll down using the link provided earlier, you find this:

  • full: performs full database backup at level 0. See Complete Backup. This backup can be part of an incremental backup strategy.

  • incr: performs incremental backup with RMAN. See full database backup (level 0) in Incremental Backup.

...

So in short, BR*Tools (BRBACKUP) is surely able to handle RMAN backups on its own.

Your findings with the note are not true. How should Level 0 and Level 1 backups work with BR*Tools without BCT?

I recommend to configure BRBACKUP as you see in the provided links and the note, and then perform some tests with Level 0 (-m full) and Level 1 (-m incr) backups to see that it works indeed.

sreenu1983
Explorer
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Hi Janos,

Thank you again for the quick response.

Our scenario was focussing on the usage of the backup strategy "RMAN Incremental Backups Without a Backup Library" (backups to only disks) and not "RMAN Backup with the SAP Backup Library" (backups to tapes).

Sorry, i should've already mentioned in my post.

Best Regards

Sreenivas