redo log groups vs. rollback segments

From the docs I understand that redo logs are used to log all changes to the database while rollback segments are used to log changes that occur within a transaction?? Is that correct? Does that mean that redo logs grow much more than rollback segs?

Can someone please explain the difference and perhaps point out some configuration guidelines for redo logs vs. rollback segs, in terms of size, number, placement, etc?

Many Thanks :-)

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Before you buy. Received on Sun May 28 2000 - 00:00:00 CDT