Re: Redo log and RBS

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....

Actually loosely speaking redo only contains after images, and rollback the before images...thus no redundancy .

Since redo contains the after images of your rollback, it can use this to recover your database

• redos to roll forward thus restoring your roll back segs
• then use the roll back seg info to roll back --

  ---

  Connor McDonald "These views mine, no-one elses etc etc" connor_mcdonald_at_yahoo.com

"Some days you're the pigeon, and some days you're the statue." Received on Thu Aug 05 1999 - 07:44:27 CDT