RE: Tracking Temp Segment Usage and Event 10046

From: Khedr, Waleed <Waleed.Khedr_at_FMR.COM>
Date: Wed, 18 Sep 2002 07:03:20 -0800
Message-ID: <F001.004D2464.20020918070320@fatcity.com>

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I'd start looking at the execution plans first and examine if there is any Cartesian joins and the order the tables get joined.

Waleed

-----Original Message-----
Sent: Tuesday, September 17, 2002 10:34 AM To: Multiple recipients of list ORACLE-L

I have a problem with a process and its temp segment usage.

Previously, in RBO (8161) we used to run 8 reports with slightly different parameters in parallel and it used to work fine with all other load on the system and the total TEMP space was 6GB

Since we migrated to CBO (all tables & indexes are analyzed using estimate), these processes fail with unable to extent temp segment error. Currently we have allocated 12GB to temp tablespace.

I also have performance issues so I am doing a 10046 trace at level 8 on this one. Is there a way to identify when this process used temp space, how much and when does it de-allocate?

Would this information be available in 10046 trace or is there something else that I could do to track that ...

Thanks in advance
Raj

Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.

QOTD: Any clod can have facts, but having an opinion is an art!

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<DIV>I'd
start looking at the execution plans first and examine if there is any Cartesian joins and the order the tables get joined.</DIV>
<DIV> </DIV>
<DIV>Waleed</DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
 <DIV class=OutlookMessageHeader dir=ltr align=left>-----Original Message----- From: Jamadagni, Rajendra [mailto:Rajendra.Jamadagni_at_espn.com] Sent: Tuesday, September 17, 2002 10:34 AM To: Multiple recipients of list ORACLE-L Subject: Tracking Temp Segment Usage and Event 10046 </DIV>
 I have a problem with a process and its temp segment usage. 
 Previously, in RBO (8161) we used to run 8 reports with slightly different parameters in parallel and it used to work fine with all other load on the system and the total TEMP space was 6GB Since we migrated to CBO (all tables & indexes are analyzed using estimate), these processes fail with unable to extent temp segment error. Currently we have allocated 12GB to temp tablespace. I also have performance issues so I am doing a 10046 trace at level 8 on this one. Is there a way to identify when this process used temp space, how much and when does it de-allocate? Would this information be available in 10046 trace or is there something else that I could do to track that ... Thanks in advance <FONT

  face="Courier New">Raj</FONT> <BR><FONT face="Courier New" 
  size=2>______________________________________________________</FONT> <BR><FONT 
  face="Courier New" size=2>Rajendra Jamadagni&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! </BLOCKQUOTE></BODY></HTML>

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Author: Khedr, Waleed
  INET: Waleed.Khedr_at_FMR.COM

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Received on Wed Sep 18 2002 - 10:03:20 CDT