SQL execution time
Hello
I was wondering if anyone could advise on the best way to capture the following in an 11g database.
Say that we have;
-a piece of SQL execution by up to 50 times per minute.
-unique execution times vary.
Aside from dba_hist_sqlstat and generate a sort of average over a period of 30 min.
What would be the best way to get the execution time of this piece of SQL in real-time.
say I want the individual execution time of this last of 100 executions.
Any help would be appreciated
Thank you
Draw the session (with events of waiting if you want) that executes SQL and tkprof the trc file.
ORACLE-BASE - Oracle Trace and TKPROF
Tags: Database
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Reg: SQL query execution time
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How to identify the oracle sql query execution time.
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If the result is 300 lines it scrolls up until all the rows are retrieved and finally gives me the run time in 40 seconds, or 1 minute... (it is after all records scrolls)
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concerning
REDAIn sqlplus you can do set autotrace traces to suppress the display of the selected lines.
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Help please - issue of calculation of execution time
Hello
Version of DB: database Oracle 11 g Enterprise Edition Release 11.2.0.3.0
Previous thread (RE: help please - issue of calculation of execution time) mode lock, therefore open new thread.
Karthick_Arp thanks for your great help with the merge code.
I modified my code with Merge statement instead of loops and internal loops.
PFB code and output. But still I am negitive values over time of execution because end_time < start_time is coming. Please suggest me how to solve this problem.
1 CREATE OR REPLACE PROCEDURE my_proc
2 EAST
3 sql_string VARCHAR2 (4000);
4 v_start_time TIMESTAMP;
5 v_end_time TIMESTAMP;
6 v_rowcnt NUMBER;
7. START
8 FOR c1 IN (SELECT ROWNUM tab_no, tablename, TYPE
9 FROM stored_ddl_policies by tablename) / * mourning tablename order * /.
10 LOOP
11 sql_string: = q']
12 merge into #tablename # b
13 using (select empkey, id, dt
14de emp_base) on (a.empkey = b.empkey)
15when matched then update set b.id = a.id, b.dt = a.dt] ";
16 sql_string: = REPLACE (sql_string, "#tablename #", c1.tablename);
17 v_start_time: = SYSTIMESTAMP;
18
19 sql_string EXECUTE IMMEDIATE.
20
21 v_end_time: = SYSTIMESTAMP;
22 v_rowcnt: = SQL % ROWCOUNT;
23 DBMS_OUTPUT.put_line (c1.tablename); / * added for display * /.
24 DBMS_OUTPUT.put_line (v_start_time);
25 DBMS_OUTPUT.put_line (v_end_time);
26 INSERT INTO exec_time (TABLE_NAME, START_TIME, END_TIME, EXCUTION_TIME, NO_OF_RECORDS_PROCESSED)
27 VALUES (c1.tab_no |) ' ' || C1. TableName, v_start_time, v_end_time, v_end_time - v_start_time, v_rowcnt);
28 END LOOP;
29
30 COMMIT;
31EXCEPTION
32 THEN THAN OTHERS
33 THEN
34 DBMS_OUTPUT.put_line (SQLERRM);
35END;
16 m
OUTPUT:
select * from exec_time by start_time desc
TABLE_NAME START_TIME, END_TIME EXCUTION_TIME NO_OF_RECORDS_PROCESSED
6 TAB6 31/05/2013 3:07:00.282065 AM 31/05/2013 3:06:47.103731 AM - 00 33 00:00:13.178334
23 TAB23 31/05/2013 3:06:56.159271 AM 31/05/2013 3:06:56.342313 AM + 00 00:00:00.183042 1013
20 TAB20 31/05/2013 3:06:47.104115 AM 31/05/2013 AM + 00 00:00:09.054770 158169 3:06:56.158885
13 TAB13 31/05/2013 3:06:41.668578 AM 31/05/2013 3:06:31.690199 AM - 00 28 00:00:09.978379
7 TAB7 31/05/2013 3:06:41.624134 AM 31/05/2013 3:06:41.668468 AM + 00 00:00:00.044334 0
12 TAB12 31/05/2013 3:06:31.690582 AM 31/05/2013 3:07:00.281522 AM + 00 00:00:28.590940 240715
3 TAB 3 31/05/2013 3:06:24.669461 AM 31/05/2013 3:06:41.623421 AM + 00 00:00:16.953960 47426
2 TAB2 31/05/2013 3:06:24.182326 AM 31/05/2013 AM + 00 00:00:00.486723 5242 3:06:24.669049
8 RAB8 31/05/2013 3:06:21.416823 AM 31/05/2013 3:06:24.181956 AM + 00 00:00:02.765133 28636
1 TAB1 31/05/2013 3:06:16.320679 AM 31/05/2013 AM + 00 00:00:05.095731 132633 3:06:21.416410
16 TAB16 31/05/2013 3:06:07.446056 AM 31/05/2013 AM + 00 00:00:08.874227 421215 3:06:16.320283
11 TAB11 31/05/2013 3:06:07.442987 AM 31/05/2013 3:05:55.361263 AM - 00:00:12.081724-00 60273
19 TAB19 31/05/2013 3:06:03.683463 AM 31/05/2013 3:06:07.445630 AM + 00 00:00:03.762167 77549
15 TAB15 31/05/2013 3:06:00.291696 AM 31/05/2013 3:06:03.683017 AM + 00 00:00:03.391321 77117
10 TAB10 31/05/2013 3:05:57.787733 AM 31/05/2013 AM + 00 00:00:09.654601 517960 3:06:07.442334
18 TAB18 31/05/2013 3:05:56.742873 AM 31/05/2013 3:06:00.291274 AM + 00 00:00:03.548401 105630
24 TAB24 31/05/2013 3:05:55.361707 AM 31/05/2013 3:05:56.742506 AM + 00 00:00:01.380799 15115
4 TAB4 31/05/2013 3:05:18.873303 AM 31/05/2013 3:05:06.966972 AM - 00:00:11.906331-00 49078
21 TAB21 31/05/2013 3:05:13.609759 AM 31/05/2013 3:05:18.872878 AM + 00 00:00:05.263119 56525
22 TAB22 31/05/2013 3:05:09.070048 AM 31/05/2013 AM + 00 00:00:48.717139 451439 3:05:57.787187
5 TAB5 31/05/2013 3:05:06.967411 AM 31/05/2013 3:05:09.069642 AM + 00 00:00:02.102231 773
25 TAB25 31/05/2013 3:05:05.198282 AM 31/05/2013 AM + 00 00:00:08.410911 308670 3:05:13.609193
14 TAB14 31/05/2013 3:04:59.575951 AM 31/05/2013 3:05:05.197701 AM + 00 00:00:05.621750 12118
17 TAB17 31/05/2013 3:04:43.740910 AM 31/05/2013 3:04:59.575503 AM + 00 00:00:15.834593 529
9 TAB9 31/05/2013 3:04:38.286041 AM 31/05/2013 3:04:59.011404 AM + 00 00:00:20.725363 65921
Thanks in advance.
Published by: 1008545 on May 31, 2013 01:40
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Get the SQL execution plan that is currently running in 9i
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Apologies for the magnitude of this issue, but I was wondering if someone could help me to the more accurate/efficient way to get a piece of running Oracle 9i SQL execution plan.
in 10g and 11g of course dbms_xplan.display_cursor (sql_id) can be used.
How can this be achieved in 9i, currently I am just get the SQL_TEXT and then executing a plan to explain ("EXPLAIN PLAN for.") - I think that this is not neccesserally the same plan to explain that will be used for the sql code that runs if
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Thank youThe plan exists after analysis difficult.
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Sandy
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For example:-table of log´s
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VARCHAR2 (120) of the event.
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prc_log (p_obj_name-online 'frist_object',
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prc_log (p_obj_name-online 'second_object',
p_event-online 'start');second_object;
-call once again, once again, once again
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-Drifter, then select table log´s
Select *.
of e executation_log
order of e.time_executeThank you...
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How to know the execution time
Hello
I'm using Oracle 11 g. I want to know the execution time of a query.
Can someone help me please how to find it.
And. y at - it a tool that compares the performance of the 2 queries?user13044793 wrote:
HelloI'm using Oracle 11 g. I want to know the execution time of a query.
Can someone help me please how to find it.
In SQL * more:
SET TIMING ON
And. y at - it a tool that compares the performance of the 2 queries?
In SQL * more:
SET AUTOTRACE ON
URS
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or
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Hello! My VI has two processes: compression and edge detection image and I'm trying to measure the execution time for the process of detection of edge of my VI, but I don't know how to do. Please give me some ideas on how to do it. Thank you!
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I hope I have your question! See attached screenshot
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I tried to measure the execution time. The rate is 1KS/s through to read 100 per channel in a loop of 10 and samples. The time should be about 1000 ms, but it is only 500-600 ms. And when I changed the rate/number of samples, the run time does not change... How could it happen?
Well,.
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Hi all
I have a problem of severe weather that I don't know how to fix it because I don't know exactly where it comes from.
I order two RF switches via a data acquisition card (NI USB-6008). One job at the same time can be selected on each switch. Basically, the VI created for this feature (by a colleague) resets all the outputs of acquisition data and active then those desired. It has three entrances, two chain simp0le controls and a cluster table, that contains the list of all the outputs and some practical information to know what is connected (specific to my application).
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I someone could explain to me why execution time increases and how can we avoid this? I have attached my VI test and the necessary subVIs, as well as an image of a graph that shows the execution time with a while loop and «run permanently»
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Your SetReset_DO VI creates a channel whenever it is called. And that you never delete a task.
When running continuously, that it's as if it only runs once and LabVIEW has internal mechanisms to close references that will not be used again. When a VI is used as a Subvi, LV does not know if she will be called again, and lacks these things until the first level VI stops. You have a memory leak.
Just as you open and close your file outside the loop for, create your channel out of the loop.
Lynn
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