Re: Log switches

From: Raj Jamadagni <rjamya_at_yahoo.com>
Date: Wed, 7 Jul 2004 08:35:05 -0700 (PDT)
Message-ID: <20040707153505.4938.qmail@web50008.mail.yahoo.com>

Hi Tanel,

archive_lag_target is alredy set to 60 the minimum ... how can I bring it further down?

Raj
--- Tanel_Põder <tanel.poder.003_at_mail.ee> wrote:
> Hi!
>
> Remember that every logswitch causes a checkpoint, so if you're switching
> logs very often, you'll have very agressive checkpointing, causing excessive
> IO and dbwr activity (also all datafiles' headers are updated during full
> checkpoint).
>
> So I doubt that your system will perform well if you're switching logs every
> few seconds, but if you want to control this manually, you could set
> archive_lag_target to few seconds, causing a log switch after every given
> interval...
>
> Tanel.

---

Best Regards
Raj

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Received on Wed Jul 07 2004 - 10:31:46 CDT