RE: Freelist Contention - PQ slaves

From: Koivu, Lisa <lisa.koivu_at_efairfield.com>
Date: Tue, 21 Aug 2001 09:05:48 -0700
Message-ID: <F001.00372723.20010821084222@fatcity.com>

I thought that parallel query slaves were smart enough to divide up the work between them so there was no overlap?  What am I missing?  Can you elaborate? -----Original Message-----

From:   Johnson Poovathummoottil [SMTP:joni_65_at_yahoo.com]
Sent:   Tuesday, August 21, 2001 11:21
To:     Multiple recipients of list ORACLE-L

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!
> http://businesscards.lycos.com/vp/fastpath/
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Viraj Luthra

>   INET: viraj999_at_lycos.com

>
> Fat City Network Services    -- (858) 538-5051  FAX:
> (858) 538-5051
> San Diego, California        -- Public Internet
> access / Mailing Lists

>

---

> 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.com
> --
> Author: Jon Walthour

>   INET: jonw_at_fuse.net

>
> Fat City Network Services    -- (858) 538-5051  FAX:
> (858) 538-5051
> San Diego, California        -- Public Internet
> access / Mailing Lists

>

---

> 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).

---

Do You Yahoo!?
Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Johnson Poovathummoottil
  INET: joni_65_at_yahoo.com


Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
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).

Received on Tue Aug 21 2001 - 11:05:48 CDT