RE: log buffer space

I think this might help...

http://www.ixora.com.au/tips/tuning/log_buffer_size.htm

-----Original Message-----
Sent: Friday, March 14, 2003 11:19 AM
To: Multiple recipients of list ORACLE-L

What's the size of your log buffer, and the redo log file? Do you see any errors/messages in alert.log file that are related to 'checkpoints' or 'log switching'?

• Kirti

-----Original Message-----
Sent: Friday, March 14, 2003 10:14 AM
To: Multiple recipients of list ORACLE-L

Do you guys think , adding more log file can help ? I think it should not , cuz any way logwriter is going to write in one datafile at a time , correct ?

-ak

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Friday, March 14, 2003 4:32 AM

> Arup:
>
> <NO FLAMES>
> The second condition is not quite true. It is 2/3 full in the current
> versions.
> </NO FLAMES>
>
> It is very easy to test with the event 10046^8.
>
> KG
>
>
> --- Arup Nanda <orarup_at_hotmail.com> wrote:
> > AK,
> >
> > If the log buffer is at least 4MB, then increasing it will not help,
> > rather it may hurt. The log buffer is flushed when any of the the
> > follwoing occur
> > (i) 1 MB is filled up
> > (2) 1/3rd is filled up
> > (3) every 3 seconds
> > (4) when a checkpoint occurs
> > (5) when a commit occurs.
> >
> > Therefore, see if any of these could be the problem. It's easy to
> > check #s 4 and 3.
> >
> > As Kirti suggested, the problem could be due to the redo logs being
> > on a busy disk, or even a slow one.
> >
> > HTH.
> >
> > Arup
> > ----- Original Message -----
> > From: Deshpande, Kirti
> > To: Multiple recipients of list ORACLE-L
> > Sent: Thursday, March 13, 2003 8:13 PM
> > Subject: RE: log buffer space
> >
> >
> > Increasing log_buffer size is an option, if it is really small.
> > I would also check if the redo logs are on a busy disk. If so, try
> > moving those (or other busy data files on the same disk) to other
> > not-so-busy disks.
> >
> > - Kirti
>
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Deshpande, Kirti
  INET: kirti.deshpande_at_verizon.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Chris Stephens
  INET: ChrisStephens_at_affina.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).