Networker

Re: [Networker] Oracle RMAN recovery

2004-02-27 12:37:47
Subject: Re: [Networker] Oracle RMAN recovery
From: Matthew Huff <mhuff AT OX DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Fri, 27 Feb 2004 12:37:23 -0500
There are a couple of different types of files Oracle uses:

1) Control Files (stores locations to other datafiles, etc...)
2) Log Files (redo log) "after image"
3) Data Files

Tablespaces are the main "logical" storage system within Oracle
databases. Tablespaces are made up of physical "Data Files". Within
"Tablespaces" are what are called "segments". Segments are just
allocation units within the tablespace. Rollback "segments" are special
units used to store the "before image" of transactions.

So, a "non-rollback segment datafile" is just a normal piece of an
Oracle tablespace where no rollback segments have been defined.

Oracle restores are tricky and you can easily end up with a
non-startable database. I highly recommend you take a look at Oracle's
RMAN documentation. Legato simply provides a physical layer for RMAN to
store to, so it really is an "Oracle" thing.

RMAN 9iR2 Recovery Manager User's Guide
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96566/toc.
htm

RMAN 9iR1 Recovery Manager User's Guide
http://download-west.oracle.com/docs/cd/A91202_01/901_doc/server.901/a90
135/toc.htm

RMAN 8i http://download-east.oracle.com/docs/cd/A87860_01/doc/index.htm

----
Matthew Huff           | One Manhattanville Rd
Director of Operations | Purchase, NY 10577
OTA LLC                | Phone: 914-460-4039 
http://www.otaotr.com  | Fax:   914-460-4139    

> -----Original Message-----
> From: Anuj Mediratta [mailto:anuj AT ACE-DATA DOT NET] 
> Sent: Friday, February 27, 2004 12:22 PM
> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Subject: [Networker] Oracle RMAN recovery
> 
> 
> Hi All,
> 
> Can someone guide me what do we exactly mean by a 
> "non-rollback segment datafile". I need to demonstrate a 
> customer how to recover the same from a backup taken used 
> Legato NMO 3.5
> 
> Regards,
> Anuj
> 
> --
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