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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Falconstor/IPStor with Clariion, EMC Timefinder with Symmetrix
Carel-Jan,
the *one and only* reason why you need to put Oracle data files in backup mode is to avoid fractured blocks -- that is, ending up with Oracle blocks (spanning multiple OS blocks) with the header and footer out of sync. I don't know the technology of "snapshotting" all data files in a single atomic action -- sounds interesting to me... how do they do this? be careful, this might be marketing language, with some vipers under the grass ;-)
anyway, if it is really true that they can guarantee this "atomic snapshotting" you would be able to do hot backups without the need to put your tablespaces or data files in backup mode. By the way, you don't really need it at the database level; at the data file level it is good enough.
Whether this is supported, that's another story.
Cheers,
Lex.
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Carel-Jan Engel
Sent: woensdag 24 maart 2004 10:12
To: oracle-l_at_freelists.org
Subject: Falconstor/IPStor with Clariion, EMC Timefinder with Symmetrix
Hi list,
Does anyone know these products for HA-solutions? Especially, is it possible/certified to snapshot databases without putting the database in backup mode?
The idea behind it is that all datafiles (incl. control and online redolog) are snapshotted in one single atomic action. The snapshot is stored at a local mirror, and asynchronously transferred to the DR-site. Failover can be performed by starting and (auto)recovering the database at the DR site. Because all files were copied in the state they were in one point in time, starting the database at the remote site should be the same as starting a database after a power failure.
I'm not interested in all kinds of other HA solutions, the site I'm currently working for has implemented these solutions, but needs verification. It's hard to get commitment from the vendors that their products are certified for Oracle, although they advised and sold the solution :-(.
Thanks, Carel-Jan
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If you think education is expensive, try ignorance. (Derek Bok)
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