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.
Sent: Tuesday, April 19, 2005 2:55 PM
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 18.104.22.168.0 (32-bit), running on Solaris 8.