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тАО01-05-2001 02:49 AM
тАО01-05-2001 02:49 AM
Informix Online & EMC Symmetrix BCV backup query
We are looking at only doing cold backups so I do not think that we need the Omniback/Informix integration?
Any help/pointers gratefully received.
Thanks,
Brian Woolley.
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тАО01-05-2001 04:57 AM
тАО01-05-2001 04:57 AM
Re: Informix Online & EMC Symmetrix BCV backup query
When you want to perform a backup of a Informix Instance, you need the OBII/Informix Integration. You must install it on your Cell Server and distribute it to the Servers running Informix.
- onbar -b -L 0 # full backup, backup of the specified dbspaces
- onbar -b -w -L 0 # Whole Backup, backup of all dbspaces
- onbar -r # cold restore
- onbar -r -w # Whole restore, will recreate dbspaces.
Some documents which can be handy to read:
http://managementsoftware.hp.com/Call.asp?contexID=136&link=library
http://managementsoftware.hp.com/Uploads/443.pdf
http://managementsoftware.hp.com/Uploads/omdb401.pdf
http://managementsoftware.hp.com/Uploads/415.pdf
Good Luck
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тАО01-05-2001 05:58 AM
тАО01-05-2001 05:58 AM
Re: Informix Online & EMC Symmetrix BCV backup query
Thanks. I can see how this would backup the logical volumes in use by Informix but how do you get it to look at the split off BCV copies of the volumes?
Regards,
Brian.
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тАО01-05-2001 04:03 PM
тАО01-05-2001 04:03 PM
Re: Informix Online & EMC Symmetrix BCV backup query
I do not know about EMC+Informix. However, I can relate about XP256+Oracle in my environment.
Our Business Copy backup basically follows the following algorithm:
In the /opt/omni/lbin/orabkup_pre omniback pre-backup script:
1) remote login to the database server
2) shutdown the database
3) split the copies via HORCM commands
4) startup the database
An omniback filesystem backup for Oracle filesystems proceed as normal.
In the /opt/omni/lbin/orabkup_post omniback post-backup script:
1) merge and synchronise the copies via HORCM commands
Hope this helps. Regards.
Steven Sim
Brainbench MVP for Unix Admin
http://www.brainbench.com
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тАО01-19-2001 06:51 AM
тАО01-19-2001 06:51 AM
Re: Informix Online & EMC Symmetrix BCV backup query
You run this, and it does a checkpoint and blocks any more activity to the disks. You then split off the bcv mirror. Because you did a checkpoint, the split copy will be consistient at the time of the checkpoint.
To re-enable disk activity, do:
onmode -c unblock
I believe there is a white paper on Informix's website about this.
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тАО01-19-2001 07:37 AM
тАО01-19-2001 07:37 AM
Re: Informix Online & EMC Symmetrix BCV backup query
But here is an additional benefit worth considering... After the bcv is split off you can mount this volume to any machine connected to the EMC. What this means is that you can have another server actually perform the backup and eliminate the backup processing load from your production database server. This is particulary beneficial in an environment that uses a tape library where several backups from several different machines are typically stacked up. In practice this allows the backup server to fully control the overall backup activity of the library which allows it to be much more efficient.