Here is an exctract from a trace where I execute the same sql twice in a row. You can even see the "alter session command".
PARSING IN CURSOR #1 len=84 dep=0 uid=31 oct=3 lid=31 tim=926359 hv=1785040157 ad='313afe4'
select t1.d1, t1.d2, t2.d1, t2.d2
from t1, t2
where t2.fk1=t1.pk1
and t2.d2 = 499
END OF STMT
PARSE #1:c=200,e=258,p=25,cr=401,cu=6,mis=1,r=0,dep=0,og=4,tim=926361
EXEC #1:c=0,e=0,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=926362
FETCH #1:c=0,e=2,p=2,cr=2,cu=0,mis=0,r=0,dep=0,og=4,tim=926364
STAT #1 id=1 cnt=0 pid=0 pos=0 obj=0 op='HASH JOIN '
STAT #1 id=2 cnt=0 pid=1 pos=1 obj=134295 op='TABLE ACCESS BY INDEX ROWID T2 '
STAT #1 id=3 cnt=1 pid=2 pos=1 obj=134372 op='INDEX RANGE SCAN '
STAT #1 id=4 cnt=0 pid=1 pos=2 obj=134293 op='TABLE ACCESS FULL T1 '
=====================
PARSING IN CURSOR #1 len=53 dep=0 uid=31 oct=47 lid=31 tim=926366 hv=3759542639 ad='316aac4'
BEGIN DBMS_APPLICATION_INFO.SET_MODULE(:1,NULL); END;
END OF STMT
PARSE #1:c=1,e=1,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=926367
APPNAME mod='SQL*Plus' mh=3669949024 act='' ah=4029777240
EXEC #1:c=0,e=0,p=0,cr=0,cu=0,mis=0,r=1,dep=0,og=4,tim=926368
*** 2003-10-01 09:39:52.448
=====================
PARSING IN CURSOR #1 len=69 dep=0 uid=31 oct=42 lid=31 tim=928350 hv=589283212 ad='30f70b8'
alter session set events '10046 trace name context forever, level 8'
END OF STMT
PARSE #1:c=2,e=2,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=4,tim=928351
EXEC #1:c=0,e=0,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=928351
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
*** 2003-10-01 09:40:02.682
WAIT #1: nam='SQL*Net message from client' ela= 1021 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
=====================
PARSING IN CURSOR #1 len=53 dep=0 uid=31 oct=47 lid=31 tim=929375 hv=3759542639 ad='316aac4'
BEGIN DBMS_APPLICATION_INFO.SET_MODULE(:1,NULL); END;
END OF STMT
PARSE #1:c=2,e=2,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=929376
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
APPNAME mod='01@ c:\tmp\tst.sql' mh=764572216 act='' ah=4029777240
EXEC #1:c=1,e=1,p=0,cr=0,cu=0,mis=0,r=1,dep=0,og=4,tim=929377
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
=====================
PARSING IN CURSOR #1 len=84 dep=0 uid=31 oct=3 lid=31 tim=929380 hv=1785040157 ad='313afe4'
select t1.d1, t1.d2, t2.d1, t2.d2
from t1, t2
where t2.fk1=t1.pk1
and t2.d2 = 499
END OF STMT
PARSE #1:c=3,e=3,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=929382
EXEC #1:c=0,e=0,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=929383
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
FETCH #1:c=1,e=1,p=0,cr=2,cu=0,mis=0,r=0,dep=0,og=4,tim=929384
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
STAT #1 id=1 cnt=0 pid=0 pos=0 obj=0 op='HASH JOIN '
STAT #1 id=2 cnt=0 pid=1 pos=1 obj=134295 op='TABLE ACCESS BY INDEX ROWID T2 '
STAT #1 id=3 cnt=1 pid=2 pos=1 obj=134372 op='INDEX RANGE SCAN '
STAT #1 id=4 cnt=0 pid=1 pos=2 obj=134293 op='TABLE ACCESS FULL T1 '
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
=====================
PARSING IN CURSOR #1 len=53 dep=0 uid=31 oct=47 lid=31 tim=929388 hv=3759542639 ad='316aac4'
BEGIN DBMS_APPLICATION_INFO.SET_MODULE(:1,NULL); END;
END OF STMT
PARSE #1:c=2,e=2,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=929389
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
APPNAME mod='SQL*Plus' mh=3669949024 act='' ah=4029777240
EXEC #1:c=2,e=2,p=0,cr=0,cu=0,mis=0,r=1,dep=0,og=4,tim=929391
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message from client' ela= 0 p1=1413697536 p2=1 p3=0
WAIT #1: nam='SQL*Net message to client' ela= 0 p1=1413697536 p2=1 p3=0
*** 2003-10-01 09:40:14.219
WAIT #1: nam='SQL*Net message from client' ela= 1135 p1=1413697536 p2=1 p3=0
=====================
PARSING IN CURSOR #1 len=57 dep=0 uid=31 oct=42 lid=31 tim=930528 hv=1975444627 ad='30f59a0'
alter session set events '10046 trace name context off'
END OF STMT
PARSE #1:c=2,e=2,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=4,tim=930530
EXEC #1:c=0,e=0,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=4,tim=930530
At 08:54 AM 10/1/2003, you wrote:
Hi!
This is the problem, that everything else was identical. If you executed exactly the same query again, it didn't get hard parsed anymore, thus no STAT lines were generated. Either flush shared pool or just add some bogus comment using /* */ into your query to get parsing and STAT lines.
Tanel. ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Wednesday, October 01, 2003 4:34 PM
> I was creating some trace files yesterday and came across one of these > problems that shows up occasionally (then I forget about it). > > When I ran my query using ALTER SESSION SET sql_trace=true (sqlplus; > 8.1.7.4), I got the STAT line in the trace and the associated 'row source' > information after running tkprof. > > When I ran my query using ALTER SESSION SET EVENTS '10046 trace name context > forever, level 8' (or with dbms_system.set_ev), there were no STAT entries > for my query. There were some for some of the recursive queries. > > Everything else was identical. >
Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Wolfgang Breitling INET: [EMAIL PROTECTED]
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