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RE: explain plans for PL/SQL and transactions

From: Igor Neyman <ineyman_at_perceptron.com>
Date: Thu, 08 May 2003 11:42:16 -0800
Message-ID: <F001.005944EF.20030508114216@fatcity.com> 





Darrell,



Please don't take it personally; there was no intent to "insult".
It is known, that 10046 event traces SQL (standalone and inside PL/SQL).



My understanding was, that Patrice asked, how to trace PL/SQL
constructs, not SQL statements inside PL/SQL.
Quoting original e-mail:


"A user here is submitting code that keeps looping.  The SQL itself is
not


the problem, I think the problem has to do with the execution path of
the


PL/SQL code."



Igor Neyman, OCP DBA


ineyman_at_perceptron.com





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


Landrum


Sent: Thursday, May 08, 2003 1:53 PM


To: Multiple recipients of list ORACLE-L



Let's set aside the insult of being questioned whether I have read the
original e-mail.


I have to ask have either you or Mr. Neyman run a 10046, level 8
trace?



Patrice asked :


Is there a way to track the activity associated with a batch job, to
see:


-- the execution plans and costs for all the code it submits






A 10046 level 8 trace provides all of that information (plus much more)
except memory.


One example of an analyzed 10046 level 8 trace file from a session in
which I ran a simple block of PL/SQL code is attached.
Guess what?  It shows all of the recursive sql.  It shows execution
plans.  It shows costs.  It shows cpu time.  It shows the overall time,
etc., etc., etc.



Here is the script I ran...


alter session set tracefile_identifier='DWL';
set serveroutput on size 1000000


alter session set max_dump_file_size=unlimited;
alter session set events '10046 trace name context forever, level 8';
alter session set events '10053 trace name context forever, level 1';



declare



v_var1  user_tables.table_name%type;


v_var2  date;



begin


        select table_name into v_var1 from user_tables where rownum <
2;



        select sysdate into v_var2 from dual;



        dbms_output.put_line('The values are: '||v_var1||' and
'||v_var2);



end;


/






>>> Rajendra.Jamadagni_at_espn.com 05/08/03 01:02PM >>>
Darrell,



His point is that 10046 does SQL tracing, not pl/sql tracing. OP asked
for


pl/sql tracing.



Raj








Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
QOTD: Any clod can have facts, having an opinion is an art !




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


Sent: Thursday, May 08, 2003 1:07 PM


To: Multiple recipients of list ORACLE-L




So, what's your point?



>>> ineyman_at_perceptron.com 05/08/03 11:37AM >>>
Did you read the original e-mail?


Patrice asked about tracing PL/SQL, not SQL.



Igor Neyman, OCP DBA


ineyman_at_perceptron.com 




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


Landrum


Sent: Tuesday, May 06, 2003 1:02 PM


To: Multiple recipients of list ORACLE-L



Sounds like a good use for a 10046 level 8 or 12 trace.  Full and
recommend use of 10046 trace is too much for one e-mail but I'd start
researching on metaling and there are some excellent documents
available


at www.hotsos.com.




>>> BoivinP_at_mar.dfo-mpo.gc.ca 05/06/03 08:26AM >>>
Is there a way to track the activity associated with a batch job, to
see:






I like explain plan very much, but am looking for something similar
that


covers PL/SQL as well.



A user here is submitting code that keeps looping.  The SQL itself is
not


the problem, I think the problem has to do with the execution path of
the


PL/SQL code.



I am looking for something that provides the comprehensive info we get
from


explain plan, but for a batch job.



Patrice.


-- 



Please see the official ORACLE-L FAQ: http://www.orafaq.net 


-- 



Author: Boivin, Patrice J


  INET: BoivinP_at_mar.dfo-mpo.gc.ca 


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Author: Darrell Landrum


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Author: Igor Neyman


  INET: ineyman_at_perceptron.com


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Received on Thu May 08 2003 - 14:42:16 CDT












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