Message-ID: <F001.005D2B7E.20031010110425@fatcity.com>
Date: Fri, 10 Oct 2003 11:04:25 -0800
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From: "Jamadagni, Rajendra" <Rajendra.Jamadagni@espn.com>
Subject: RE: Redos gone crazy--a job for audit?
Organization: Fat City Network Services, San Diego, California
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I just repeated this test and found that .... 

for normal tables the redo size is 292848
for GTT the redo size is 1581888 (increase of 540%) ....

Thank You Thank You Thank You Thank You Thank You Thank You Boris for mentioning this.
Raj
--------------------------------------------------------------------------------
Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
QOTD: Any clod can have facts, having an opinion is an art !


-----Original Message-----
Sent: Friday, October 10, 2003 2:39 PM
To: Multiple recipients of list ORACLE-L


Igor,

Try running the following test:

create table t6 (i int) ;

create global temporary table t7 (i int) on commit
delete rows;

select value from v$mystat m, v$statname s 
where m.statistic#=s.statistic# and s.name = 'redo
size';

--> Note the value here

insert into t6 select obj# from sys.obj$ where rownum
<= 10000;

commit;

select value from v$mystat m, v$statname s 
where m.statistic#=s.statistic# and s.name = 'redo
size';

--> Compare the two. In my case it's almost 10-fold
increase in the amount of redo generated.

We ran into this not too long ago. Bug# 2874489. Fixed
in 10.1.0.1 with some backports available for
9.2.0.3/4 on **some** platforms

Note: Bug above doesn't affect direct path load

Thanks,
Boris.

 --- Igor Neyman <ineyman@perceptron.com> wrote: >
Why?
> Did you have bad experiences with temp tables?
> I thought, using temp tables should reduce amount of
> redo.
> 
> Igor Neyman, OCP DBA
> ineyman@perceptron.com
> 
> 
> 
> -----Original Message-----
> Boris Dali
> Sent: Friday, October 10, 2003 12:54 PM
> To: Multiple recipients of list ORACLE-L
> 
> Barbara,
> 
> Shoot in the dark. Any chance last vendor upgrade
> introduced global temporary tables?
> 

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Author: Boris Dali
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Author: Jamadagni, Rajendra
  INET: Rajendra.Jamadagni@espn.com

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