Long procedure execution time

Hello,
I hav a procedure which consists of select and insert statements(includes Union, Minus, DataType conversions etc.). Three tables of around 27 fields each, are involved in procedure. Table has around 87-90 lakhs of records. This procedure is taking around 7-8 hours for execution.
There is another almost exactly same procedure with tables of almost same fields, takes less than 5 minutes for execution. How can I optimize the previous procedure so that execution time is reduced.
Thanks.

Table has around 87-90 lakhs of records. 1 lakh is 100,000 records.
How can I optimize the previous procedure so that execution time is reduced.Without even knowing how the procedure looks, we can't comment or even able to help you. Apart from the number of columns and rows, we don't have any other information regarding your procedure or data or index.
Please elaborate so that anyone can help you.
Cheers
Sarma.

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How can i check the procedure execution time..?

Hi All,
Can any one of you tell me how can i check the procedure execution time..?
Thanks in advance.

if running it from SQL*Plus,
SQL> set timing on
Or from PL/SQL, use DBMS_UTILITY.GET_TIME before and after the call and calclate the difference.

Measure procedure execution time..

Hi,
Is there any possibility to measure how long each of a procedure in database take?? Is that possible for Oracle's V$ views or by performance report like AWR? On the other hand, is that possible to measure execution time for SQL statements, but without using "set timing on".
Best,
tutus

This is just an add-on to Satish's reply. You may want to chck this link to see how Profiler works,
http://www.oracle-base.com/articles/9i/DBMS_PROFILER.php
HTH
Aman....

Procedure execution time difference in Oacle 9i and Oracle 10g

Hi,
My procedure is taking time on
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 is 14 min.
same procedure is taking time on oracle Release 9.2.0.1.0 is 1 min.
1) Data is same in both environment.
2) Number of records are same 485 rows for cursor select statement.
3)Please guide me how to reduce the time in oracle 10g for procedure?
i have checked the explain plan for that cursor query it is different in both enviroment.
so i have analysis that procedure is taking time on cursor fetch into statement in oracle 10g.
example:-
create or replace procedure myproc
CURSOR cur_list
IS select num
from tbl
where exist(select.......
EXECUTE IMMEDIATE 'ALTER SESSION SET SQL_TRACE = TRUE';
EXECUTE IMMEDIATE 'ALTER SESSION SET TIMED_STATISTICS = TRUE';
OPEN cur_list;
LOOP
FETCH cur_list INTO cur_list; -----My procedure is taking time in this statement only for some list number. there are 485 list number.
end loop;
TRACE file for oracle 10g is look like this:-
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.37 0.46 0 2 0 0
Fetch 486 747.07 730.14 1340 56500700 0 485
total 488 747.45 730.60 1340 56500702 0 485
ORACLE 9i EXPLAIN PLAN FOR cursor query:-
Plan
SELECT STATEMENT CHOOSECost: 2 Bytes: 144 Cardinality: 12
     18 INDEX RANGE SCAN UNIQUE LISL.LISL_LIST_PK Cost: 2 Bytes: 144 Cardinality: 12
          17 UNION-ALL
               2 FILTER
                    1 TABLE ACCESS FULL SLD.P Cost: 12 Bytes: 36 Cardinality: 1
               16 NESTED LOOPS Cost: 171 Bytes: 141 Cardinality: 1
                    11 NESTED LOOPS Cost: 169 Bytes: 94 Cardinality: 1
                         8 NESTED LOOPS Cost: 168 Bytes: 78 Cardinality: 1
                              6 NESTED LOOPS Cost: 168 Bytes: 62 Cardinality: 1
                                   4 TABLE ACCESS BY INDEX ROWID SLD.L Cost: 168 Bytes: 49 Cardinality: 1
                                        3 INDEX RANGE SCAN UNIQUE SLD.PK_L Cost: 162 Cardinality: 9
                                   5 INDEX UNIQUE SCAN UNIQUE SLD.SYS_C0025717 Bytes: 45,760 Cardinality: 3,520
                              7 INDEX UNIQUE SCAN UNIQUE SLD.PRP Bytes: 63,904 Cardinality: 3,994
                         10 TABLE ACCESS BY INDEX ROWID SLD.P Cost: 1 Bytes: 10,480 Cardinality: 655
                              9 INDEX UNIQUE SCAN UNIQUE SLD.PK_P Cardinality: 9
                    15 TABLE ACCESS BY INDEX ROWID SLD.GRP_E Cost: 2 Bytes: 9,447 Cardinality: 201
                         14 INDEX UNIQUE SCAN UNIQUE SLD.PRP_E Cost: 1 Cardinality: 29
                              13 TABLE ACCESS BY INDEX ROWID SLD.E Cost: 2 Bytes: 16 Cardinality: 1
                                   12 INDEX UNIQUE SCAN UNIQUE SLD.SYS_C0025717 Cost: 1 Cardinality: 14,078
ORACLE 10G EXPLAIN PLAN FOR cursor query:-
     SELECT STATEMENT ALL_ROWSCost: 206,103 Bytes: 12 Cardinality: 1
     18 FILTER
          1 INDEX FAST FULL SCAN INDEX (UNIQUE) LISL.LISL_LIST_PK Cost: 2 Bytes: 8,232 Cardinality: 686
          17 UNION-ALL
               3 FILTER
                    2 TABLE ACCESS FULL TABLE SLD.P Cost: 26 Bytes: 72 Cardinality: 2
               16 NESTED LOOPS Cost: 574 Bytes: 157 Cardinality: 1
                    14 NESTED LOOPS Cost: 574 Bytes: 141 Cardinality: 1
                         12 NESTED LOOPS Cost: 574 Bytes: 128 Cardinality: 1
                              9 NESTED LOOPS Cost: 573 Bytes: 112 Cardinality: 1
                                   6 HASH JOIN RIGHT SEMI Cost: 563 Bytes: 315 Cardinality: 5
                                        4 TABLE ACCESS FULL TABLE SLD.E Cost: 80 Bytes: 223,120 Cardinality: 13,945
                                        5 TABLE ACCESS FULL TABLE SLD.GRP_E Cost: 481 Bytes: 3,238,582 Cardinality: 68,906
                                   8 TABLE ACCESS BY INDEX ROWID TABLE SLD.L Cost: 2 Bytes: 49 Cardinality: 1
                                        7 INDEX UNIQUE SCAN INDEX (UNIQUE) SLD.PK_L Cost: 1 Cardinality: 1
                              11 TABLE ACCESS BY INDEX ROWID TABLE SLD.P Cost: 1 Bytes: 16 Cardinality: 1
                                   10 INDEX UNIQUE SCAN INDEX (UNIQUE) SLD.PK_P Cost: 0 Cardinality: 1
                         13 INDEX UNIQUE SCAN INDEX (UNIQUE) SLD.SYS_C0011870 Cost: 0 Bytes: 13 Cardinality: 1
                    15 INDEX UNIQUE SCAN INDEX (UNIQUE) SLD.PRP Cost: 0 Bytes: 16 Cardinality: 1
so Please guide me how to reduce the time in oracle 10g for procedure?
1) Is this envrionment setting parameter?
2) I have to tune the query? but which is executing fine on oracle 9i?
so how to decrease the execution time?
Thanks in advance.

SELECT l_nr
FROM x.ls b
WHERE b.cd = '01'
AND b.co_code = '001'
AND EXISTS (
SELECT T_L
FROM g.C
WHERE C_cd = '01'
AND C_co_code = '001'
AND C_flg = 'A'
AND C_eff_dt <= sysdate
AND C_end_dt >=
sysdate
AND C_type_code <> 1
AND C_type_code <> 1
AND targt_ls_type = 'C'
AND T_L <> 9999
AND T_L = b.l_nr
UNION ALL
SELECT l.T_L
FROM g.C C,
g.ep_e B,
g.ep ep,
g.e A,
g.lk_in l
WHERE l.cd = '01'
AND l.co_code = '001'
AND l.cd = C.C_cd
AND l.co_code = C.C_co_code
AND l.C_nbr = C.C_nbr
AND l.targt_ls_type = 'C'
AND lk_in_eff_dt <=
sysdate
AND lk_in_end_dt >=
( sysdate
+ 1
AND ( (logic_delte_flg = '0')
OR ( logic_delte_flg IN ('1', '3')
AND lk_in_eff_dt <> lk_in_end_dt
AND l.cd = ep.C_cd
AND l.co_code = ep.C_co_code
AND l.C_nbr = ep.C_nbr
AND l.ep_nbr = ep.ep_nbr
AND l.cd = A.e_cd
AND l.co_code = A.e_co_code
AND l.e_nbr = A.e_nbr
AND l.cd = B.cd
AND l.co_code = B.co_code
AND l.C_nbr = B.C_nbr
AND l.ep_nbr = B.ep_nbr
AND l.e_nbr = B.e_nbr
AND l.ep_e_rev_nbr = B.ep_e_rev_nbr
AND B.flg = 'A'
AND EXISTS (
SELECT A.e_nbr
FROM g.e A
WHERE A.e_cd = B.cd
AND A.e_co_code = B.co_code
AND A.e_nbr = B.e_nbr
AND A.e_type_code ^= 8)
AND C_type_code <> 10
AND C.C_type_code <> 13
AND l.T_L = b.l_nr)
--yes index is same

How to know child procedure Execution time with in parent procedure

Hi Team,
I've a requirement in which I need to get the execution time of a child procedure while its running in a parent procedure in PLSQL. While the child process is running, I want to know its execution time so that if it execution time exceeds more than 5 seconds than I want to through an error. Please let me know by what means this can be achieved in plsql.
Regards,
Tech D.

TechD wrote:
Hi Team,
I've a requirement in which I need to get the execution time of a child procedure while its running in a parent procedure in PLSQL. While the child process is running, I want to know its execution time so that if it execution time exceeds more than 5 seconds than I want to through an error. Please let me know by what means this can be achieved in plsql.
Regards,
Tech D.PL/SQL is NOT a Real Time programming language.
The procedure that invokes the child procedure is effectively dormant while the child runs.
Plus there is no easy way to know when 5 seconds has elapsed.

Want new tab to open to home page and why does firefox not have a simple check box in the options because I can't keep going through a long procedure each time

I want new tab to open to home page and why does firefox not have a simple check box in the options because I can't keep going through the long tedious procedure each time I install firefox. It is something that should be in the options tab , and I want to know why it isn't. I am totally frustrated with firefox and getting ready to switch.

You can use the SearchReset extension to reset some preferences to the default values.
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Note that the SearchReset extension only runs once and then uninstalls automatically, so it won't show on the "Firefox > Add-ons" page (about:addons).
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Procedure/Function execution time

I want to get my procedure/function total execution time which is running inside of application.
I think that I can use PLSQL_EXEC_TIME column of v$sql time. Please confirm this if I can or not.

Hi;
Please see:
http://www.orafaq.com/maillist/oracle-l/2004/01/27/0522.htm
http://www.dbforums.com/microsoft-sql-server/1625184-how-catch-stored-procedure-execution-time.html
http://www.geekinterview.com/talk/9466-procedure-execution-time.html
Regard
Helios

What to do if data grows heavily.How to decrease the execution time

Procedure execution time increases from 1 minute to 40 minutes in the past three years. I think this is due to increase in size of tables. We are maintaining the database from last 6years. Nearly 25,000 records are adding per month in a table. Now each contains above 12Lakh records. I already used Query Optimization techniques. So please suggest me what to do.

So, does this process need to access the whole table or is it just interested in the last months records?
I already used Query Optimization techniques.meaning what precisely???
So please suggest me what to do.Without knowing a whole bunch more about your situation we cannot give you a solution. You have one slow process. So what? For instance, let's presume this is a batch process that runs once a month. Does a forty minute elapsed time matter compare to processes that are used by all your users many times every day? Are you prepared to risk the performance of those OLTP functions to improve the runtime of that batch process?
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Execution Times of Stored Procedures Called from Other Stored Procedures

If I execute sys.dm_exec_procedure_stats, it will produce execution times of my stored procedures executed recently.
However, stored procedures called from other stored procedures do not show up.
Is there code that can return the execution times of stored procedures even though they are called from other stored procedures.

Look at the example. It is counting nested execution.
CREATE PROC z1SP AS SELECT * FROM Production.Product;
GO
CREATE PROC z2SP AS SELECT * FROM Production.Product WHERE Color is not null; EXEC z1SP;
GO
SELECT object_name(2002822197), object_name(2034822311);
--z1SP z2SP
EXEC z1SP; EXEC z2SP;
GO 10
SELECT * from sys.dm_exec_procedure_stats
database_id object_id type type_desc cached_time last_execution_time execution_count
16 2002822197 P SQL_STORED_PROCEDURE 2014-12-16 13:02:45.170 2014-12-16 13:02:46.717 20
16 2034822311 P SQL_STORED_PROCEDURE 2014-12-16 13:02:45.460 2014-12-16 13:02:46.687 10
Kalman Toth Database & OLAP Architect
SQL Server 2014 Database Design
New Book / Kindle: Beginner Database Design & SQL Programming Using Microsoft SQL Server 2014

Long execution times for TestStand conditional statements

I have two test stations – one here, one at the factory in China that has been operating for about a year. The test program uses TestStand 3.1 and calls primarily dll's developed using CVI. Up until a couple months ago, both test stations performed in a similar manner, then the computer at the factory died and was replaced with a new, faster computer. Now the same test sequence at the factory take three times as long to execute (30 min at the facotry, 10min here).
I have recoded the execution time at various point during the execution, and have found that the extra times seems to be occurring during the evaluation of conditional statements in TestStand (i.e. for loops, if statements, case statements). For example, one particular ‘for’ evaluation takes 30 ms on the test station here, but takes 400 ms at the test station at the factory (note: this is just the evaluation of the for condition, not the execution of the steps contained within the for loop).
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Label1
Subsequence Call
Label2
I record the execution time to the report text in both Label1 and Label2. Subtracting one from the other gives me about 18 seconds. However the ‘Module Time’ recorded for ‘Subsequence Call’ is only 3.43 seconds.
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Execution time of a simple vi too long

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ptured by NI Spy mainly (lines 8 - 160) consist of ThreadIberr() and ibwait(UD0, 0x0000).
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Thanks a lot
Bettina Welter

Hello,
Thanks for contacting National Instruments. It seems like the 1 second delay that is occurring is due to the operation being called. ThreadIberr returns the value of iberr, while ibwait simply implements a wait. These two get called repeatedly while the GPIB device waits for the instrument (K2400, in your case) to finish its operation and respond back. It is quite possible that when you query the Keithley to send back 100 bytes of data, it has to gather them from its buffer (if its already been generated). And if there aren't 100 bytes of data in the buffer, the Keithley will keep the NRFD line asserted while it gathers 100 btyes of data. After the data has been gathered, the NRFD line is deasserted, at which point, ThreadIberr will detect the change in th
e ibsta status bit and read the 100 bytes.
So make sure that the 100 bytes of data that you are requesting don't take too long to be gathered, since this is where the main delay lies. Hope this information helps. Please let us know if you have further questions.
A Saha
Applications Engineering
National Instruments
Anu Saha
Academic Product Marketing Engineer
National Instruments

Execution time of procedures

How can find out the execution time of procedures.
I've debug and find why a procedure takes so much time for its execution.
Could someone please help me with tips or links to useful info.

First you can use the SQLPlus feature "set timing on" This will print the run time of each SQL or pl/sql procedure executed in the session.
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Third look at the dbms_profiler package Oracle provides.
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Calculate execution time of procedure

hiii
I create procedure that insert data in multiple tables i want to calculate execution time of procedure the start time
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Look at the docs for DBMS_PROFILER.
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Long procedure execution time

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