Re: How much time can save using _disable_logging on 10g
- From: Juan Carlos Reyes Pacheco <juancarlosreyesp@xxxxxxxxx>
- To: cmarquez@xxxxxxxxxxxxxxxx
- Date: Tue, 11 Oct 2005 12:07:15 -0400
Thanks Chris, I agree with you, a simple shutdown immediate crashed
my test database too, but anyway is interesting to know its
limitations.
Can you tell me please how much time you saved :) only for statistics.
when migrating.
Thanks in Advance.
On 10/11/05, Marquez, Chris <cmarquez@xxxxxxxxxxxxxxxx> wrote:
>
>
>
> >>shutdown abort with _disable_logging and you'll see some interesting
> consequences
>
> Ahhhh yes we conversed on this topic a while back. I used _disable_logging
> for migration purposes after a lot of TEST my process.
> I kept wondering why my test db was crashing hard...we had some disk issue
> at the time, so that seemed the culprit.
> Turns out I kept leaving my TEST db up with _disable_logging enabled during
> server reboots...it did not come back happily
>
> A great and very, very challenging recovery filled with undocumented
> parameters that rendered my TEST database un-supported.
> I was able to recover sometimes, but others not.
> Think I was "bumping scn's" and allowing reset log corruption.
> You have not lived until you have recovered a database this way...nasty!
> :o)
> Also, learned and documented the "clean way" to stop using _disable_logging
> and put my db back in archive log mode.
>
>
> Sorry, "yes" _disable_logging saved time during my migration (at the risk
> of loosing it all on the *new* server, but not on the old server).
>
> Chris Marquez
> Oracle DBA
>
> ________________________________
> From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
> On Behalf Of Connor McDonald
> Sent: Monday, October 10, 2005 11:08 AM
> To: oracle-l@xxxxxxxxxxxxx
> Subject: Re: How much time can save using _disable_logging on 10g
>
>
> shutdown immediate is still a clean shutdown.
>
> Try shutdown abort with _disable_logging and you'll see some interesting
> consequences
>
> hth
> connor
>
>
>
> --
> Connor McDonald
> ===========================
> email: connor_mcdonald@xxxxxxxxx
> web: http://www.oracledba.co.uk
>
> "Semper in excremento, sole profundum qui variat"
--
Oracle Certified Profesional 9i 10g
Orace Certified Professional Developer 6i
8 years of experience in Oracle 7,8i,9i,10g and developer 6i
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