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Re: RE: Freelist Contention

From: Jon Walthour <jonw_at_fuse.net>
Date: Tue, 21 Aug 2001 09:35:11 -0700
Message-ID: <F001.00372767.20010821084226@fatcity.com>

No. Just because you have a high bbw ratio, that doesn't indicate strictly a freelist problem. However, having problems with freelists often results in a high bbw ratio.

Jon Walthour
>
> From: Johnson Poovathummoottil <joni_65_at_yahoo.com>
> Date: 2001/08/21 Tue AM 11:21:02 EDT
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Subject: RE: Freelist Contention
>
> Bufer busy waits can also be caused by parallel query
> servers trying to read the same buffer block at the
> same time. So does it always indicate a freelist
> problem?
> .
> --- Jon Walthour <jonw_at_fuse.net> wrote:
> > Raja:
> >
> > You will know you have freelist contention if you
> > have a significant
> > buffer busy waits ratio (>5%).
> >
> > Jon Walthour
> >
> > -----Original Message-----
> > Luthra
> > Sent: Monday, August 20, 2001 11:45 PM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Hello folks,
> >
> > How do I come to know that there is a contention
> > going on in the
> > freelists? Is there any v$ table or this type of
> > contention you derive
> > from some other info. like a ripple effect from some
> > parameter?
> >
> > TIA.
> >
> > raja
> >
> >
> > Get 250 color business cards for FREE!
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> > --
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> > --
> > Author: Viraj Luthra
> > INET: viraj999_at_lycos.com
> >
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> Author: Johnson Poovathummoottil
> INET: joni_65_at_yahoo.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Jon Walthour
  INET: jonw_at_fuse.net

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Received on Tue Aug 21 2001 - 11:35:11 CDT

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