RE: guidance

I'd be interested to see the sequence of tests that support the hypothesis that "disk sorts are about 14,000 times slower than memory sorts."

Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com

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-----Original Message-----
DENNIS WILLIAMS
Sent: Thursday, September 25, 2003 12:30 PM To: Multiple recipients of list ORACLE-L

Rich - Actually the hint in that posting made me realize what I was wrestling with on an index build. Don Burleson explains it well  http://www.praetoriate.com/oracle_tips_sorting_operations.htm

Dennis Williams
DBA, 80%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Thursday, September 25, 2003 11:35 AM To: Multiple recipients of list ORACLE-L

OK, I'll bite: If SORT_AREA_SIZE isn't to be set, then what is? Are you
referring to the automagic PGA management?

Rich

Rich Jesse                           System/Database Administrator
rjesse_at_qtiworld.com                  Quad/Tech Inc, Sussex, WI USA

10:30 AM CST = 5:30 PM CEST. Rats! Now I'll have to wait until tomorrow
for an answer... :)

> -----Original Message-----
> From: Mogens Nørgaard [mailto:mln_at_miracleas.dk]
> Sent: Wednesday, September 24, 2003 6:45 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: guidance
>
>
> Just talked to Jonathan Lewis from Helsinki. He went through
> some of the
> examples given in the latest issue of Oracle Magazine, and they were
> just plain wrong.
>
> I can't recall them in detail, but I think one of the questions were
> which parameter to set in order to let a user do large sorts.
> In 9i you
> shouldn't set sort_area_size, but that was the correct answer. And so
> on, and so forth.
>
> So the important advise is to do what you think they would
> like to hear :).
>
> Mogens
>
> bulbultyagi_at_now-india.net.in wrote:
>
> >List , I am planning to give my 9i performance tuning exam
> on the first .
> >Any advice you all want to give me ? Pretty nervous about
> it. Sure would
> >appreciate your guidance.
> >........

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