Oracle-L: Re: How to tune this query ...

From: Barbara Baker <barbarabbaker_at_yahoo.com>
Date: Fri, 08 Nov 2002 13:43:55 -0800
Message-ID: <F001.004FF5C4.20021108134355@fatcity.com>

Raj:
I had trouble with this very query. Posted it to this list. Never came up with anything. What fixed the query for me was to add the ordered hint (select /*+ ordered */). You might give it a try.
Good luck!!

Barb

"Jamadagni, Rajendra" <Rajendra.Jamadagni_at_espn.com> wrote: I am looking at oracle supplied locking query ... any idea how to tune this ?

SELECT l.SID,s.serial#,s.username,s.terminal,

DECODE(l.TYPE,'RW','RW - Row Wait Enqueue', 'TM','TM - DML Enqueue', 'TX','TX - Trans Enqueue', 'UL','UL - User',l.TYPE||'System') res,

        SUBSTR(t.NAME,1,20) TAB,u.NAME owner, 
        l.id1,l.id2, 
        DECODE(l.lmode,1,'No Lock', 
                2,'Row Share', 
                3,'Row Exclusive', 
                4,'Share', 
                5,'Shr Row Excl', 
                6,'Exclusive',NULL) lmode, 
        DECODE(l.request,1,'No Lock', 
                2,'Row Share', 
                3,'Row Excl', 
                4,'Share', 
                5,'Shr Row Excl', 
                6,'Exclusive',NULL) request

FROM v$lock l, v$session s,
sys.USER$ u,sys.obj$ t
WHERE l.SID = s.SID

AND s.TYPE != 'BACKGROUND' 
AND t.obj# = l.id1 
AND u.USER# = t.owner#

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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Author: Barbara Baker
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