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From: Doug Cowles <dcowles@bigfoot.com>
Newsgroups: comp.databases.oracle.server
Subject: Re: Redo log and RBS
Date: Sun, 08 Aug 1999 20:38:31 -0400
Organization: IBM Austin 
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Actually, redo contains both before and after because rollback is logged to
redo.
There was a thread on this a while ago I might be able to dig up.  The
upshot is
it makes sense.

- Dc.

Cho, Hyon-Hyok wrote:

> Hi, I have used oracle database about 4 years.
> But still I confuse the functional difference of redo log and rbs.
> Only I can see is redo log has before/after image,  rbs has before image
> and their function is very redundent.
>
> if you can give me an answer, please....