RE: ASM - hardware mirroring vs. Oracle mirroring

From: freek D'Hooge <>
Date: Mon, 14 Apr 2008 15:58:46 +0200
Message-ID: <000001c89e37$a8639eb0$>


You could try to use the utl_file.fcopy procedure to copy the db files. But I think you would actually need a third db to initiate the copy (as your first db should be down to copy the online redo logs).



Freek D'Hooge
Oracle Database Administrator
tel +32(0)3 451 23 82

From: [] On Behalf Of Baumgartel, Paul
Sent: maandag 14 april 2008 15:39
To: Jared Still
Subject: RE: ASM - hardware mirroring vs. Oracle mirroring

I didn't say that RMAN doesn't work with ASM.  I said that "there are certain operations in, e.g., RMAN, that aren't supported with ASM".  This was based on co-workers' comments regarding a database migration to a new server. 

I just checked with them to clarify, and what they said is that if you're migrating a database to a new machine, and you're using ASM, RMAN is the only way to go, and the RMAN clone process requires an "open resetlogs" of the copy after recovery.  This caused a problem for them, as the database in question uses Streams, and the resetlogs meant that Streams had to be set up anew in the migrated database.  They wanted a way to copy the database (including online redo logs) and open it normally, and felt that the use of ASM forced them to use RMAN, which made this impossible.

In my addled Friday-afternoon brain I interpreted and oversimplified that information, so the statement in my post was incorrect.

Paul Baumgartel
Information Technology
Prime Services Databases Americas
One Madison Avenue
New York, NY 10010
Phone 212.538.1143

Received on Mon Apr 14 2008 - 08:58:46 CDT

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