Execution time of transactions

Hi,
I'm a bit confused about a the execution time of transactions in a transaction.
I just wrote a transaction which calls four other transactions (just for time testing) and I get the following result:
[INFO ]: Execution Started At: 09:11:37
[INFO ]: Execution Started At: 09:11:37
[INFO ]: Execution Completed At: 09:11:37 Elapsed Time was 453 mS
[INFO ]: Execution Started At: 09:11:38
[INFO ]: Execution Completed At: 09:11:38 Elapsed Time was 31 mS
[INFO ]: Execution Started At: 09:11:38
[INFO ]: Execution Completed At: 09:11:38 Elapsed Time was 109 mS
[INFO ]: Execution Started At: 09:11:38
[INFO ]: Execution Completed At: 09:11:38 Elapsed Time was 125 mS
[INFO ]: Execution Completed At: 09:11:38 Elapsed Time was 1547 mS
the first 4 time information are from the calles transaction. The last time information is from the "outer" transaction.
But I just call the 4 transactions and don't do anything else. Why is there such a big time difference? (more then double of time) And how can I solve this problem?
Thanks
Matthias

Jeremy,
If the box is checked and you only call the TRX action once in your logic flow I don't think it really makes any difference because the runner servlet has to load/parse the file at least once no matter what.
Do you mean it doesn't make any differences generally or I performance?
As the "log" shows there is a difference. Even in my original transaktion I feel that it is really faster. But the general results are the same. So I get the same results faster
Just to be sure: The outer transaction and the transaction will be loaded everytime it is called by a user, webservice or what ever. So if the the transaction is startet twice a the same second in different threads they were also loaded twice?
And another question: I don't think it is possible to start a new thread in a transaction, is it? Why I'm asking: In my transaction I have some action that shuld be executed immediately and other action that can be done at a later time. (Some updates / inserts in tables and they aren't critical if they fail). So best solution on performance point of view would be if the main thread runs fast and the User gets the result and all other things run after this. Do I have any chance to do so or is something like this planed in future versions of MII?
I mark this question as answered as my originaly question is answered.
Thank you.
Regards,
Matthias

Similar Messages

Transaction Execution Time

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Edited by: Amit Gupta on Dec 2, 2008 5:43 AM

Hi Amit,
Normally the performance can be tested with the tcode SM30 and ST05( select queries) , this is done by the ABAPers to know the performance of the program.
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I have Oracle Database 11g R2 64 bit database on Oracle Linux 5.6. My system has ONE hard drive.
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>
It's always interesting to see the results of serious attempts to quantify the effects of variation in block sizes, but it's hard to do proper tests and eliminate side effects.
I have Oracle Database 11g R2 64 bit database on Oracle Linux 5.6. My system has ONE hard drive.A single drive does make it a little too easy for apparently random variation in performance.
Recently I experimented with 8.5 GB database in TPC-E test. I was watching transaction time for 2K,4K,8K Oracle block size. Each time I started new test on different block size, I would created new database from scratch to avoid messing something up Did you do anything to ensure that the physical location of the data files was a very close match across databases - inner tracks vs. outer tracks could make a difference.
(each time SGA and PGA parameters ware identical).Can you give us the list of parameters you set ? As you change the block size, identical parameters DON'T necessarily result in the same configuration. Typically a large change in response time turns out to be due to changes in execution plan, and this can often be associated with different configuration. Did you also check that the system statistics were appropriately matched (which doesn't mean identical cross all databases).
In all experiments a gave to my own tablespace (NEWTS) different configuration because of oracle block-datafile size limits :
2K oracle block database had 3 datafiles, each 7GB.
4K oracle block database had 2 datafiles, each 10GB.
8K oracle block database had 1 datafile of 20GB.If you use bigfile tablespaces I think you can get 8TB in a single file for a tablespace.
Now best transaction (tranasaction execution) time was on 8K block, little longer tranasaction time had 4K block, but 2K oracle block had definitly worst transaction time.We need some values here, not just "best/worst" - it doesn't even begin to get interesting unless you have at least a 5% variation - and then it has to be consistent and reproducible.
I identified SQL query(when using 2K and 4K block) that was creating hot segments on E_TRANSACTION table, that is largest table in database (2.9GB), and was slowly executed (number of executions was low compared to 8K numbers).Query, or DML ? What do you mean by "hot" ? Is E_TRANSACTION a partitioned table - if not then it consists of one segment, so did you mean to say "blocks" rather than segments ? If blocks, which class of blocks ?
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If the results are reproducible, then enable extended tracking (dbms_monitor, with waits) and show us what the tkprof summaries for the slow transactions look like. That may give us some clues.
Regards
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To Check the execution time for each transaction.

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TIA,
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Hi,
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We are implementing SAP SCM 5.0 integrated to SAP R/3 Mills IS.
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Dear Analía,
The corresponding error messages issued when executing //CCR indiacted the peg-ids are missing in liveCache.
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Craig: you say it's easy to go from 1.7 seconds per user lookup down to a small fraction of it? Then apparently I'm lacking these skills. Could you please give me a hint what should be done there?
I though about creating a Z function, but having to write custom wrappers - possibly for about any transaction in this style - I wanted to avoid.
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Reduce execution time

How to reduce the execution time of this code?
Loop at porder1.
SELECT aufnr bstmg hsdat sgtxt bwart charg FROM mseg INTO
(porder-aufnr,porder-bstmg,porder-hsdat,porder-sgtxt,porder-bwart,
porder-charg)
                                         WHERE matnr = porder1-matnr AND
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                                               werks = porder1-pwerk AND
                                               ( bwart = '101' OR
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Endselect.
Endloop.
Regards
Praju .

Hi prajwal.
I would like to suggest,
It is possible to reduce the time of execution by Increasing the number of fields in the WHERE clause as only those specific number of records are fetched which results in comparatively less execution time.
Also, SAP has designed such powerfull tools like Transactions - ST05, ST07, ST30, and many more
I would like to suggest you a couple of references relating to your case,
[SDN - Reference for Long execution time during processing of a select query|/thread/477540 [original link is broken];
[SDN - Reference for Reducing the Execution time of the program - Tools|How can i reduce time of execution;
[SDN - Reference for solutions to reduce the execution time of a program|How to reduce my query execution time?;
Hope that's usefull.
Good Luck & Regards.
Harsh Dave

Execution time in microseconds

Hi,
Can someone tell me what should be the ideal execution time of a program in microseconds. My program consists of 2586 lines and has almost around 10 subroutines and some 10 function modules. Could you suggest me how the execution time is determined for a program.
Thanks,
Binay.

You can use simple command like
declare three variables :
data : a Type i,
b type i,
c type i.
start-of-selection.
Write the command in staring
get runtime field a. -> will have intial start time
write the one more command in last
get runtime field b. -> this is final time
c = b - a. -> c will have total execution time in micro seconds
or
you can use ST05 Transaction to find out the time,here you need count the all times.
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Seshu

Execution Time for T.Code

Hi Experts,
I want to know the exact execution time for a t.code. I check it in ST03 or ST03n but I can't get proper data. In ST03 I get the average and total response time but I want the exact ececution or response time.
Waiting for your inputs.
Regards,
Nisit

From SAP
For old verions
In ST03 transaction
click on "Performance Database" tab
Then double click on Total
It will open Dialogue box CHOOSE TIME PERIOD ,select the time period and then click on the required date
Then Click on Transaction Profile ,here it will give the list of transaction executed and its execution time
In STO3N , you will find "TRANSACTION PROFILE" under Analysis views, when you double click on it will give present days Transaction codes executed.
If you want the month data then go to Export mode in ST03n ,you will get the data "TRANSACTION PROFILE" under Analysis views .
Regards,
Beena

Query Execution Time for a Query causing ORA-1555

dear Gurus
I have ORA-01555 error , earlier I used the Query Duration mentioned in Alert Log and increased the Undo Retention as I did not find th UnDOBLKS column of v$undostat high for the time of occurence of ORA-01555..
But new ORA-01555 is coming whose query duration exceeds Undo Retention time..
My question -
1. Is it possible to accurately find the query duration time besides the Alert Log file ?

abhishek, as you are using an undo tablespace and have already increased the time that undo data is retained via undo_retention then you might want to consider the following ideas which were useful with 1555 error under manual rbs segment management.
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If you find item 2 is true then separating the select from the update will likely eliminate the 1555. You do this by building a driving table that has the keys of the rows to be updated or deleted. Then you use the driver to control accessing the target table.
3- If the cause of the 1555 is or may be delayed block cleanout then select * from the target prior to running the long running query.
Realistically you might need to increase the size of the undo tablespace to hold all the change data and the value of the undo_retention parameter to be longer than the job run time. Which brings up back to option 1. Tune every query in the process so that the job run time is reduced to optimal.
HTH -- Mark D Powell --
dear mark
Thanks for the excellent advise..I found that the error is coming because of frequent commits..which is item 2 as u righly mentioned ..
I think I need to keep a watch on the queries running , I was just trying to find the execution time for the queries..If there is any way to find the query duration without running a trace ..
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abhishek

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Hello!
We are using EJB entities 3.0 and JPA configured to run on WAS and DB2. We also are using Container Managed Persistence
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In some of the 11 tables there are could be multiple rows inserted, in average, about 2 inserts.
We are using the EntityManager.persist method to handle each entity.
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Is this a reasonable/decent time for the operation we are trying to do?
If not, what would be a reasonable running time for such an operation?
What do we need to do in order to improve the performance and decrease the execution time, other than switching to BMP and coding manual SQL inserts?

user2617486 wrote:
Do you have any idea how we can localize/isolate better the problem at the DB level?
Can we programatically insert log statements to see how long it takes the processing on the WAS and how long takes the actual SQL statements execution once they hit the DB2 database?You need help from a DBA, you can't reason this problem away. You need cold hard facts from whatever tooling the database provides. Of course you could try adding log statements to see how long each database operation is taking on the Java side of things, but that only proves that it is slow, not WHY it is slow.
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Lat execution time of REPORT

hi all gurus,
how can i know the last execution time of any ABAP report. i mean how can i know that when the last time this particular report was executed?
is there any transaction code?
or is there any method for it?
please let me know.
thanks in advance.
regards,
hardik.

hi Araujo,
thanks for your response.
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thanks,
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Hardik.

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CF8, using CFDIV to bind to a CFC. The CFC has several SQL
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Dear SAP,
We have been applying support packs to our system from last few days.
We have upgraded our ABAP and BASIS level from 10 to 17th Component.
It has been found that TCodes take time to Open for first time after
applying the components. In case of SMART FORMS the execution time
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Hi Njitesh,
After Upgrade you should run SGEN ( SAP Load Generator ), which will execute all the transactions once and makes the system faster.
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Hello�All,
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��while(enumeration.hasMoreElements()){
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��if(className.indexOf("Driver")!=-1)System.out.println(className);
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��try{
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��for(int�i=0;�i<interfaces.length;�i++){
��if(interfaces.getName().equals("java.sql.Driver")){
��drivers.add(classe);
��}
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��Class�superclasse�=�classe.getSuperclass();
��interfaces�=�superclasse.getInterfaces();
��for(int�i=0;�i<interfaces.length;�i++){
��if(interfaces[i].getName().equals("java.sql.Driver")){
��drivers.add(classe);
��}
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��}catch(NoClassDefFoundError�e){
��}catch(Exception�e){}
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��}
��}
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��public�Enumeration�getDrivers(){
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��
��public�String�getJarFileName(){
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��
��public�static�void�main(String[]�args)�throws�Exception{
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��System.out.println(classe.getName());
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��at�java.net.URLClassLoader$1.run(URLClassLoader.java:198)
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��at�java.net.URLClassLoader.findClass(URLClassLoader.java:186)
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��at�sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
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��at�java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
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��at�com.marmots.dbreplicator.DBReplicatorAdmin.<init>(DBReplicatorAdmin.java:115)
��at�com.marmots.dbreplicator.DBReplicatorAdmin.main(DBReplicatorAdmin.java:93)
Driver�file�is�not�in�the�classpath�!!!�
I�have�tried�also�(as�you�can�see�in�comented�lines)�to�update�System�property�java.class.path�by�adding�the�path�to�the�jar�but�neither...
I'm�sure�I'm�making�a/some�mistake/s...�can�you�help�me?
Thanks�in�advice,
(if�there�is�some�incorrect�word�or�expression�excuse�me)

Sorry i have tried to format the code, but it has changed to �... sorry read this one...
Hello All,
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System.out.println("-->" + System.getProperty("java.class.path"));
Enumeration enumeration = jarFile.entries();
while(enumeration.hasMoreElements()){
String className = ((ZipEntry)enumeration.nextElement()).getName();
if(className.endsWith(".class")){
className = className.substring(0, className.length()-6);
if(className.indexOf("Driver")!=-1)System.out.println(className);
try{
Class classe = loadClass(className, true);
Class[] interfaces = classe.getInterfaces();
for(int i=0; i<interfaces.length; i++){
if(interfaces.getName().equals("java.sql.Driver")){
drivers.add(classe);
Class superclasse = classe.getSuperclass();
interfaces = superclasse.getInterfaces();
for(int i=0; i<interfaces.length; i++){
if(interfaces[i].getName().equals("java.sql.Driver")){
drivers.add(classe);
}catch(NoClassDefFoundError e){
}catch(Exception e){}
public Enumeration getDrivers(){
return drivers.elements();
public String getJarFileName(){
return jarFile.getName();
public static void main(String[] args) throws Exception{
DriverFinder df = new DriverFinder("D:/Classes/db2java.zip");
System.out.println("jar: " + df.getJarFileName());
Enumeration enumeration = df.getDrivers();
while(enumeration.hasMoreElements()){
Class classe = (Class)enumeration.nextElement();
System.out.println(classe.getName());
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at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at com.marmots.database.DB.<init>(DB.java:44)
at com.marmots.dbreplicator.DBReplicatorConfigHelper.carregaConfiguracio(DBReplicatorConfigHelper.java:296)
at com.marmots.dbreplicator.DBReplicatorConfigHelper.<init>(DBReplicatorConfigHelper.java:74)
at com.marmots.dbreplicator.DBReplicatorAdmin.<init>(DBReplicatorAdmin.java:115)
at com.marmots.dbreplicator.DBReplicatorAdmin.main(DBReplicatorAdmin.java:93)
Driver file is not in the classpath !!!
I have tried also (as you can see in comented lines) to update System property java.class.path by adding the path to the jar but neither...
I'm sure I'm making a/some mistake/s... can you help me?
Thanks in advice,
(if there is some incorrect word or expression excuse me)

Execution time of transactions

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