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Home -> Community -> Usenet -> c.d.o.server -> Re: rollback and redo questions
A copy of this was sent to "B.Sc Yassir Khogaly"
<yassir_at_khogaly.freeserve.co.uk>
(if that email address didn't require changing)
On Wed, 4 Nov 1998 15:20:50 -0000, you wrote:
>I've a small comment about your comment "It'll actually roll forward from
>redo first ( recovering the rollback segements
>>as well -- they are part of the redo information, they are logged) and then
>>rollback any uncommitted transactions from the rollback segements (which
>just
>>got recovered themselves).
> This should be "It'll actually roll forward from redo entries recovering
>the rollback segements are part of the Recovery Process
>because the rollback segments are actually part of the redo/redo information
>nesessary for Recovery.
>
????
thats what I said in different words -- we said almot the same thing. Your way of saying it actually sounds more ambigous to me.
You say "recovering the rollback segments are part of the recovery process" -- are you saying that recovering the rollback segements is part of the recovery process (yes it is) or are you saying that rollback segments are part of the recovery process (yes they are).
I basically said:
>>It'll actually roll forward from redo first ( recovering the rollback
>segements
>>as well -- they are part of the redo information, they are logged) and then
>>rollback any uncommitted transactions from the rollback segements (which
>just
>>got recovered themselves).
Thomas Kyte
tkyte_at_us.oracle.com
Oracle Government
Herndon VA
--
http://govt.us.oracle.com/ -- downloadable utilities
Anti-Anti Spam Msg: if you want an answer emailed to you, you have to make it easy to get email to you. Any bounced email will be treated the same way i treat SPAM-- I delete it. Received on Thu Nov 05 1998 - 07:09:32 CST
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