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Home -> Community -> Mailing Lists -> Oracle-L -> RE: pmon & smon transaction recovery/rollback
If a session process fails or is explicitly told to rollback pmon uses
the session process to do the work. I suspect that when you killed the
processes you effectively killed the pmon rollback operation so smon
took over.
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of amonte
Sent: Wednesday, January 31, 2007 10:09 AM To: Kevin Lidh Cc: oracle-l_at_freelists.org Subject: Re: pmon & smon transaction recovery/rollback yes, I think you mean setting event 10513 to level 2, however myquestion is, isnt that really a pmon's job?
On 1/31/07, Kevin Lidh < kevin.lidh_at_gmail.com <mailto:kevin.lidh_at_gmail.com> > wrote:
A long time ago on a database far, far away, we killed a process which
was in the process of consuming a large amount of temp and SMON worked
for hours on that tablespace. We actually had to set an event to
"pause" SMON until we had the time to allow TEMP to be cleaned up.
On Wed, 2007-01-31 at 12:53 +0100, amonte wrote:
> Hi
>
> I have a basic question, we all know that pmon's task
is to cleanup
> resource by failed processes such as rolling back
transaction,
> releasing locks and resources etc. We also know that
smon rolls back
> uncommited transactions after instance failure.
>
> My question is, I killed a couple of processes this
morning and smon
> went crazy performing parallel recovery, I was
wondering shouldnt that
> pmon's job? There was no instance failure.
>
> TIA
>
> Alex
>
-- http://www.freelists.org/webpage/oracle-lReceived on Wed Jan 31 2007 - 11:31:53 CST
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