Re: Free buffer requested

Anjo, Igor

Apologies, didn't make myself clear.

Redo log space wait time has a value of 58,554 Redo buffer allocation retries 18

The another wait statistics where either 0 or pretty close to 0.

With this value, I check the Performance manual, PDF version and in chapter 19 page 7 makes reference to this statistic. I incremented the value and nothing happened, initially was 50 MB, for that reason I stopped and ask for help.

HTH Ramon

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, June 19, 2002 1:53 PM

> Hi,
>
> I get easily confused, but you mention that 3 statistics are extremely
"high". Oracle
> has 200+ statistics, so the others are ok ?
> Why do you focus on these 3 ? You even fail to mention what you are doing
in these
> tests, so how can we tell you what to do ?
>
> Identify the symptoms (these processes need to run 3 times faster, for
example)
> Investigate the symptoms
> Formulate the root cause
> fix the the root cause
>
> I think that you are skipping a couple of stages in the problem solving
process,
>
> Anjo.
>
>
> com.banilejas_at_codetel.net.do wrote:
>
> > Hi list,
> >
> > Scenario Sun 880 Solaris 8, Oracle 8.1.7.3, 8GB Ram, 4 processors
> >
> > Redo logs 200MB size 4 groups in 1 disk
> > DBWriter = 2
> > log buffer 200 BM
> > Shared Pool 1 GB
> > db block buffers 100,000
> > db block size 8K
> >
> > I started a process and checked the V$sysstat and get those values are
extremely high
> >
> > free buffer requested 28938, enqueue requests 25035, redo writer
latching time 0
> >
> > Data 1 volume stripe of 2 disk
> > Index 1 volume stripe of 2 disk -- differents
> > RBS 1 disk apart
> > Temp 1 disk apart
> >
> > What parameter should I check ?
> >
> > TIA
> >
> > Ramon E. Estevez
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author:
> > INET: com.banilejas_at_codetel.net.do
> >
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Anjo Kolk
> INET: anjo_at_oraperf.com
>
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> San Diego, California -- Public Internet access / Mailing Lists
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Ramon E. Estevez
  INET: com.banilejas_at_codetel.net.do

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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also send the HELP command for other information (like subscribing).