Re: Hanging query puzzle

Just a warning for the future - this is no longer true on all versions of Oracle 9 because the wait_time column is a copy of the underlying x$ timing column rounded from microseconds to hundredths. Hence the wait_time can show a zero when the actual time is non-zero.

You should depend only on the STATE column which is a decode of the basic microsecond value, and shows 'WAITING' if and only if the microsecond time is zero.

Regards

Jonathan Lewis
http://www.jlcomp.demon.co.uk

Coming soon one-day tutorials:
Cost Based Optimisation
Trouble-shooting and Tuning
Indexing Strategies
(see http://www.jlcomp.demon.co.uk/tutorial.html )

____UK_______March 19th
____USA_(FL)_May 2nd

Next Seminar dates:
(see http://www.jlcomp.demon.co.uk/seminar.html )

____USA_(CA, TX)_August

The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html

-----Original Message-----
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: 05 February 2003 20:50

>
> What is the value for WAIT_TIME ? This may not be an IO problem
> if 'WAIT_TIME' is not 0. A session is waiting only when 'WAIT_TIME'
is 0.
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Jonathan Lewis
  INET: jonathan_at_jlcomp.demon.co.uk

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).