RE: RE: Why Multiple Parses in Trace ?

If this statement is a loop and the counter works atleast twice, it would show 2 parse calls and 2 executions. You should basically put this statement in the main class and just bind the variables in the callable classes and just execute the statement.

In this way it would be 1 parse call and many executions. Anyway a soft parse is not too bad as compared to Hard parse and the applications have proved them to be reasonable functioning well.

The CPU and the memory consumed is significantly just 1% what was compared with the hard parse.

Vikas Khanna

-----Original Message-----
Sent: Tuesday, July 23, 2002 10:43 AM
To: Multiple recipients of list ORACLE-L

Change the application so that it doesn't parse twice. See www.hotsos.com/dnloads/1.Holt,Millsap2000.03.01-Scaling.pdf for details.

Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com

Upcoming events:

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- Miracle Database Forum, Sep 20-22 Middlefart Denmark
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-----Original Message-----
Sent: Monday, July 22, 2002 10:43 PM
To: Multiple recipients of list ORACLE-L

Cary Millsap，

         As for the soft parse, it also consumes cpu , how can we eleminate the softparse?

        Thanks.

 2002-07-22 08:58:00 You wrote:
>...Because the application requested two parse calls for this statement
>from the server. The first one was a hard parse (server had never seen
>the statement before), and the second one was a parse call that did not
>result in a hard parse.
>
>
>Cary Millsap
>Hotsos Enterprises, Ltd.
>http://www.hotsos.com
>
>Upcoming events:
>- Hotsos Clinic, Jul 23-25 Chicago
>- Miracle Database Forum, Sep 20-22 Middlefart Denmark
>- 2003 Hotsos Symposium on OracleR System Performance, Feb 9-12 Dallas
>
>
>
>-----Original Message-----
>VIVEK_SHARMA
>Sent: Monday, July 22, 2002 8:03 AM
>To: Multiple recipients of list ORACLE-L
>
>
>Qs Why is Parse = 2 in the following Query ?
>
>Solaris 8
>Oracle 8.1.7
>SGA = 60 MB
>shared_pool_size = 30 MB
>
>***********************************************************************
*
>********
>
>select mesg, lchg_user_id, TO_CHAR(lchg_time,'DD-MM-YYYY HH24:MI:SS'),
> rcre_user_id, TO_CHAR(rcre_time,'DD-MM-YYYY HH24:MI:SS'), tran_id,
> TO_CHAR(tran_date,'DD-MM-YYYY HH24:MI:SS'), NVL(ts_cnt,0), sol_id,
> contra_acid, tran_amt||'!'||tran_crncy_code,
>TO_CHAR(value_date,'DD-MM-YYYY
> HH24:MI:SS'), tran_crncy_code, central_or_local_code, req_advc_ind,
> sys_gen_flg, rowid
>FROM
> TBA_REF_TRN_TBL WHERE cmd = :1 AND cust_or_card_id = :2 AND
> system_date_time = TO_DATE( :3 ,'DD-MM-YYYY HH24:MI:SS') AND dcc_id
=
>:4
> AND sno = :5
>
>
>call count cpu elapsed disk query current
>rows
>------- ------ -------- ---------- ---------- ---------- ----------
>----------
>Parse 2 0.06 0.07 1 0 1
>0
>Execute 2 0.00 0.00 0 0 0
>0
>Fetch 2 0.00 0.02 3 6 0
>0
>------- ------ -------- ---------- ---------- ---------- ----------
>----------
>total 6 0.06 0.09 4 6 1
>0
>
>Misses in library cache during parse: 1
>Optimizer goal: CHOOSE
>Parsing user id: 40 (TBAGEN)
>
>Rows Row Source Operation
>------- ---------------------------------------------------
> 0 TABLE ACCESS BY INDEX ROWID REF_TRN_TBL
> 1 INDEX UNIQUE SCAN (object id 6561)
>
>
>
>Rows Execution Plan
>------- ---------------------------------------------------
> 0 SELECT STATEMENT GOAL: CHOOSE
> 0 TABLE ACCESS (BY INDEX ROWID) OF 'REF_TRN_TBL'
> 1 INDEX (UNIQUE SCAN) OF 'IDX_REF_TRN_TBL' (UNIQUE)
>
>***********************************************************************
*
>********
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.com
>--
>Author: VIVEK_SHARMA
> INET: VIVEK_SHARMA_at_infosys.com
>
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Good luck!

            chaos
            chaospku_at_163.net

zhu chao
DBA of Eachnet.com
86-021-32174588-667

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  INET: chaospku_at_163.net

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-- 
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-- 
Author: Cary Millsap
  INET: cary.millsap_at_hotsos.com

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-- 
Author: Vikas Khanna
  INET: vkhanna_at_quark.co.in

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