RE: tempspace usage

Are you sure that the transactions are still holding the space?

Temp tablespace segments do NOT de-allocate when a session quits using it. It will remain allocated so the next user to need temp space does not have to go through the space allocation......

PMON will de-allocate the segments on the next instance startup.

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Greg Norris Sent: Tuesday, April 19, 2005 2:55 PM
To: ORACLE-L
Subject: tempspace usage

Is there a way to determine (or trace) which individual statements are causing tempspace to be allocated to a session? I've got a databases where half a dozen sessions seem to gradually allocate more and more tempspace (as measured by v$sort_usage), and then never release it.=3D20 Eventually they acquire almost all of the available space, which of course causes a flurry of ORA-1652 errors from other sessions.

At the moment, I'm examining a trace from one of these sessions. So far, I don't see anything which could cause this behaviour... a few inserts, some relatively simple selects, nothing particularly complex.  Any suggestions on how to troubleshoot this sort of issue?

The DB in question is Oracle 8.1.7.4.0 (32-bit), running on Solaris 8.
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http://www.freelists.org/webpage/oracle-l Received on Tue Apr 19 2005 - 17:18:35 CDT