RE: wrong setting of sort_area

From: Hillman, Alex <Alex.Hillman_at_usmint.treas.gov>
Date: Fri, 04 May 2001 14:00:43 -0700
Message-ID: <F001.002F9DC9.20010504132624@fatcity.com>

Usually such large sort_area_size is used for batch processes, so there is no problem with many such jobs running at the same time. It can be done befor e running the job and then back to old value after the job ended. Also if hash_area_size parameter default value is sort_area_size. This is why the job which took 60 hours finished in 30 min. in previous message and not because sorting became faster.

Alex Hillman

-----Original Message-----
Sent: Friday, May 04, 2001 11:50 AM
To: Multiple recipients of list ORACLE-L

Mininmal disadvantages besides overextending the machine's memory...eg if 100 people are all doing a large sort at the SAME time, you could have 100 x 10m of memory or more getting munch up...But the memory is only used when they want to do a sort ...

hth
connor

CC Harvest <ccharvest_at_yahoo.com> wrote: > we had a customer of the sort_area_size=10000000
> in their database, the temp table space is 256MB,
> the
> db_block_size is 8k. They have some performance
> problem, I think it's probably related to the
> setting
> of sort_area_size(we have only one user). So what's
> the benefits/disadvantage of too big sort_area_size?
>
> Thanks,
>
> Chris
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Auctions - buy the things you want at great
> prices
> http://auctions.yahoo.com/
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: CC Harvest
> INET: ccharvest_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).

Connor McDonald
http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk)

"Some days you're the pigeon, some days you're the statue"

Do You Yahoo!?
Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: =?iso-8859-1?q?Connor=20McDonald?=
  INET: hamcdc_at_yahoo.co.uk

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: Hillman, Alex
  INET: Alex.Hillman_at_usmint.treas.gov

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 Fri May 04 2001 - 16:00:43 CDT

RE: wrong setting of sort_area_size