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NBU & Data Domain "DDBOOST for Oracle" incompatible?

Created: 16 Oct 2012 | 11 comments

I'm looking into Data Domain "DDBOOST for Oracle" and suspect they might be incompatible.  

Both NBU & DDBOOST for Oracle are plug-ins for Oracle RMAN from what I can see they have the potential to mess with each other.  

Anybody found this to be a problem? 

Comments 11 CommentsJump to latest comment

Yasuhisa Ishikawa's picture

NetBackup for Oracle and DDboost for Oracle both use SBT_TAPE interface, and will conflict with each other.

You have to make choice by which way you take and manage backups of oracle, with NetBackup or with DDboost. Considering scheduling and retention management, I think it is better to backup oracle by NetBackup, and store backup data using DDBoost plugin for OST.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

Marianne's picture

In addition to Yasuhisa's excellent post, see this 'Symantec NetBackup for Oracle Deduplication Best Practices Guide'.

AttachmentSize
NetBackup_OracleDedupe_BestPractices(rev2).pdf 243.88 KB

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

Yasuhisa Ishikawa's picture

If you don't have to store data into DD, please consider to backup using NetBackup with client deduplication. This requires Media Serve Dedupilcation Pool(MSDP) licenced by NetBackup Data Protection Optimization license, or NetBackup Appliance.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

Jim-90's picture

Additional info ..........

NBU with DDBOOST already in use as an OST plug-in.  "DDBOOST for Oracle" is relatively new it replaces RMAN to Data Domain NFS (a feature not found in MSDP).  NBU hooks into Oracle RMAN Media Manager by replacing libobk.so by a symbolic linking NBU's own version. 

My concern is that DDBBOST for Oracle may use the method i.e. this will make it incompatibile with NBU on Linux/Unix, Windows will be a different story.

Marianne's picture

It's a choice only you can make...

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

Yasuhisa Ishikawa's picture

After short investigations, I found that DDBoost plugin for RMAN is installed with different file name with NetBackup for Oracle library - for now. DD's one is libddobk.so(UNIX) or libDDobk.dll(Windows), and NBU one is libobk.so(UNIX) or libsbt.dll(Windows).
So, for now, you can install both on same host and switch both using SBT_LIBRARY parameter in RMAN.

I'm not 100% sure, but it seems possible for me. Please check on your lab machine if you have, or ask EMC and Oracle guys if library name and parameter usage is right.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

Jim-90's picture

I'll post results when tested - about 6 weeks from now

shoeshiner's picture

Hi Jim-90,

Any update on your tests?

We're looking at feasibility of RMAN under DDOS 5.2. 

Would be interested to know how it went.

Cheers,

--shoeshiner--

Genericus's picture

Be aware that confguring for optimal deduplication my NOT mean configuring for optimal throughput.

What do you want - faster backups or better deduplication?

NetBackup 7.5.0.3 on Solaris 10
EMC Data Domain 990 VTL via FC
acsls 8.3.0
SL8500 LTO5

shoeshiner's picture

Faster everything in increasingly smaller windows with increasingly smaller budgets! :P

Jim-90's picture

Testing about to commence - its going to take several weeks.

Everything is deduplicated in this neighborhood using multiple technologies.  

The idea here is for the DBAs to manage everything themselves and not involve NBU admins. Currently using a mix of NBU and DD NFS.   For oracle you can't use CIFS as not supported for any activity because of the CIFS block size.   With NFS everybody on the box has access to all the storage of the DD device with no quotas i.e. you end up with everbody treating it as their own big storage bucket.