Performance issue with selection of line items.

Hi All.
I am facing seriour Time_Out error problem for my program. Actually i am developing RFC and i have to send data to non sap system as it is in sap tables. Now i have to send data for BSIS for new entries for a day. SO first i search BELNR for CPUDT in BKPF and then use for all entries on BSIS. But now my problem is for a single day i am getting 1679 documents from BKPF and when i use for all entries in BSIS, it will give time out error.
my code is like
SELECT BUKRS BELNR GJAHR
   FROM BKPF INTO CORRESPONDING FIELDS OF TABLE I_BKPF
      WHERE CPUDT IN S_CPUDT.
if i_bkpf[] is not initial.
SELECT * FROM BSIS INTO TABLE I_BSIS
   FOR ALL ENTRIES IN I_BKPF
      WHERE BUKRS = I_BKPF-BUKRS
                   BELNR = I_BKPF-BELNR
                   GJAHR = I_BKPF-GJAHR.
endif.
So please gurus help me ..its urgent..

Instead of writing Select * write Select "Fields names" then try might be it will solve ur problem.
Reward points is helpfull

Similar Messages

Performance Issue with BSIS(open accounting items)

Hey All,
 I am having serious performance issue with a accrual report which gets all open GL items, and need some tips for optimization.
The main issue is that I am accesing large tables like BSIS, BSEG, BSAS etc without proper indexes and that I am dealing with huge amounts of data.
The select itself take a long time and after that as I have so much data overall execution is slow too.
The select which concerns me the most is:
SELECT zuonr hkont gjahr belnr buzei budat blart wrbtr shkzg xblnr waers bukrs
 INTO TABLE i_bsis
 FROM bsis
 WHERE bukrs = '1000'
 AND hkont in r_hkont
 AND budat <= p_lcdate
 AND augdt = 0
 AND augbl = space
 AND gsber = c_ZRL1
 AND gjahr BETWEEN l_gjahr2 AND l_gjahr
 AND ( blart = c_re "Invoice
 OR blart = c_we "Goods receipt
 OR blart = c_zc "Invoice Cancels
 OR blart = c_kp ). "Accounting offset
I have seen other related threads, but was not that helpful.
We already have a secondary index on bukrs hkont and budat, and i have checked in ST05 that it does use it. But inspite that it takes more than 15 hrs to complete(maybe because of huge data).
Any Input is highly appreciated.
Thanks

Thank you Thomas for your inputs:
You said that R_HKONT contains several ranges of account numbers. If these ranges cover a significant
portion of the overall existing account numbers, then there is no really quick access possible via the
BSIS primary key.
Unfortunately R_HKONT contains all account numbers.
As Rob said, your index on HKONT and BUDAT does not help much, since you are selecting "<=" on
BUDAT. No chance of narrowing down that range?
Will look into this.
What about GSBER? Does the value in c_ZRL1 provide a rather small subset of the overall values? Then
an index on BUKRS and GSBER might be helpful.
ZRL1 does provide a decent selection . But I dont know if one more index is a good idea on overall
system performance.
I assume that the four document types are not very selective, so it probably does not pay off to
investigate selecting on BKPF (there is an index involving BLART) and joining BSIS for the additional
information. You still might want to look into it though.
I did try to investigate this option too. Based on other threads related to BSIS and Robs Suggestion in
those threads I tried this:
SELECT bukrs belnr gjahr blart budat
FROM bkpf INTO TABLE bkpf_l
 WHERE bukrs = c_pepsico
 AND bstat IN (' ', 'A', 'B', 'D', 'M', 'S', 'V', 'W', 'Z')
 AND blart IN ('RE', 'WE', 'ZC', 'KP')
 AND gjahr BETWEEN l_gjahr2 AND l_gjahr
 AND budat <= p_lcdate.
SELECT zuonr hkont gjahr belnr buzei budat blart wrbtr shkzg xblnr waers bukrs
 FROM bsis INTO TABLE i_bsis FOR ALL ENTRIES IN bkpf_l
 WHERE bukrs = bkpf_l-bukrs
 AND hkont IN r_hkont
 AND budat = bkpf_l-budat
 AND augdt = 0
 AND augbl = space
 AND gjahr = bkpf_l-gjahr
 AND belnr = bkpf_l-belnr
 AND blart = bkpf_l-blart
 AND gsber = c_zrl1.
The improves the select on BSIS a lot, but the first select on BKPF kills it. Not sure if this would help
improve performance.
Also I was wondering whether it helps on refreshing the tabe statistics through DB20. The last refresh
was done 7 months back. How frequently should we do this? Will it help?

Performance Issue with Selection Screen Values

Hi,
I am facing a performance issue(seems like a performance issue ) in my project.
I have a query with some RKFs and sales area in filters (single value variable which is optional).
Query is by default restricted by current month.
The Cube on which the query operates has around 400,000 records for a month.
The Cube gets loaded every three hours
When I run the query with no filters I get the output within 10~15 secs.
The issue I am facing is that, when I enter a sales area in my selection screen the query gets stuck in the data selection step. In fact we are facing the same problem if we use one or two other characteristics in our selection screen
We have aggregates/indexes etc on our cube.
Has any one faced a similar situation?
Does any one have any comments on this ?
Your help will be appreciated. Thanks

Hi A R,
Goto RSRT--> Give ur query anme --> Execute =Debug
--> No a pop up ill come with many check boxes select "Display Aggregates found" option --> now give ur
selections in variable screen > first it will give the already existing aggregate names> continue> now after displaying all the aggregates it will display the list of objects realted to cube wise> try to copy these objects into notepad> again go with ur drill downs now u'll get the already existing aggregates for this drill down-> it will display the list of objects> copy them to notepad> now sort all the objects related to one cube by deleting duplicate objects in the note pad>goto that Infocube> context>maintain aggregates> create aggregate on the objects u copied into note pad.
now try to execyte the report... it should work properly with out delays for those selections.
I hope it helps you...
Regards,
Ramki.

Issue with selecting a line on table control

Hello Experts,
We have a table control and using w/ SelColumn for selecting the highlighted line on a table control. It's working fine sometimes but not working in other cases. It's really wierd.
On this screen, under the Table Control, we have provided Bottons do some functionality.
When the users select a row and click on this push button, it has to call another pop-up screen.
We have the code like this:
PROCESS BEFORE OUTPUT.
MODULE INIT_0600.
LOOP AT T_qacomp_prt INTO qacomp_prt WITH CONTROL TC_qacomp_prt.
    module fill_part_number.
    MODULE Gray_Parts.
    FIELD T_qacomp_prt-MARK.
    module highlight_lines.
    MODULE LINES_0600.
ENDLOOP.
PROCESS AFTER INPUT.
MODULE CANCEL_600 AT EXIT-COMMAND.
LOOP AT T_qacomp_prt.
    FIELD T_qacomp_prt-MARK.
    MODULE READ_TABLE_CONTROL_600.
ENDLOOP.
MODULE USER_COMMAND_0600.
In User-Command the code is like this:
MODULE USER_COMMAND_0600 INPUT.
when 'ADD'.
   if t_qacomp_prt-mark = 'X'.
    get cursor line lin.
call screen 0615 starting at 30 15.
else.
   message i999(zxx) with 'Please select a line'.
endif.
For eg, When there are 5 lines on the table control, If I select the 2nd line and click on "ADD", it is calling the pop-up correctly.
However, If I select the 4th line and click on "ADD" button, it is giving the message "Please select the line".
PS: PBO, PAI code already exists, I only added the "USER-COMMAND" code.
Can you please let me know what went wrong? I greatly appreciate your help.
Thanks.

Hi,
Provide a Check box for that table control. Declare that Check box field as Type c in Main program. Go to screen PAI module write code for deleting that lines by clicking one button using sy-ucomm. Delete it where is_chk = 'X'..like try

Performance issue with select query

Hi friends ,
This is my select query which is taking so much time to retrive the records.CAn Any one help me in solving this performance issue.
*- Get the Goods receipts mainly selected per period (=> MKPF secondary
SELECT msegebeln msegebelp mseg~werks
         ekkobukrs ekkolifnr ekkozterm ekkoekorg ekko~ekgrp
         ekkoinco1 ekkoexnum
         lfa1name1 lfa1land1 lfa1ktokk lfa1stceg
         mkpfmblnr mkpfmjahr msegzeile mkpfbldat mkpf~budat
         mseg~bwart
*Start of changes for CIP 6203752 by PGOX02
         mseg~smbln
*End of changes for CIP 6203752 by PGOX02
         ekpomatnr ekpotxz01 ekpomenge ekpomeins
         ekbemenge ekbedmbtr ekbewrbtr ekbewaers
         ekpolgort ekpomatkl ekpowebaz ekpokonnr ekpo~ktpnr
         ekpoplifz ekpobstae
         INTO TABLE it_temp
    FROM mkpf JOIN mseg ON msegmblnr EQ mkpfmblnr
                       AND msegmjahr EQ mkpfmjahr
              JOIN ekbe ON ekbeebeln EQ msegebeln
                       AND ekbeebelp EQ msegebelp
                       AND ekbe~zekkn EQ '00'
                       AND ekbe~vgabe EQ '1'
                       AND ekbegjahr EQ msegmjahr
                       AND ekbebelnr EQ msegmblnr
                       AND ekbebuzei EQ msegzeile
              JOIN ekpo ON ekpoebeln EQ ekbeebeln
                       AND ekpoebelp EQ ekbeebelp
              JOIN ekko ON ekkoebeln EQ ekpoebeln
              JOIN lfa1 ON lfa1lifnr EQ ekkolifnr
    WHERE mkpf~budat IN so_budat
      AND mkpf~bldat IN so_bldat
      AND mkpf~vgart EQ 'WE'
      AND mseg~bwart IN so_bwart
      AND mseg~matnr IN so_matnr
      AND mseg~werks IN so_werks
      AND mseg~lifnr IN so_lifnr
      AND mseg~ebeln IN so_ebeln
      AND ekko~ekgrp IN so_ekgrp
      AND ekko~bukrs IN so_bukrs
      AND ekpo~matkl IN so_matkl
      AND ekko~bstyp IN so_bstyp
      AND ekpo~loekz EQ space
      AND ekpo~plifz IN so_plifz.
Thanks & Regards,
Manoj Kumar .Thatha
Moderator message - Please see Please Read before Posting in the Performance and Tuning Forum before posting and please use code tags when posting code - post locked
Edited by: Rob Burbank on Feb 4, 2010 9:03 AM

Hi friends ,
This is my select query which is taking so much time to retrive the records.CAn Any one help me in solving this performance issue.
*- Get the Goods receipts mainly selected per period (=> MKPF secondary
SELECT msegebeln msegebelp mseg~werks
         ekkobukrs ekkolifnr ekkozterm ekkoekorg ekko~ekgrp
         ekkoinco1 ekkoexnum
         lfa1name1 lfa1land1 lfa1ktokk lfa1stceg
         mkpfmblnr mkpfmjahr msegzeile mkpfbldat mkpf~budat
         mseg~bwart
*Start of changes for CIP 6203752 by PGOX02
         mseg~smbln
*End of changes for CIP 6203752 by PGOX02
         ekpomatnr ekpotxz01 ekpomenge ekpomeins
         ekbemenge ekbedmbtr ekbewrbtr ekbewaers
         ekpolgort ekpomatkl ekpowebaz ekpokonnr ekpo~ktpnr
         ekpoplifz ekpobstae
         INTO TABLE it_temp
    FROM mkpf JOIN mseg ON msegmblnr EQ mkpfmblnr
                       AND msegmjahr EQ mkpfmjahr
              JOIN ekbe ON ekbeebeln EQ msegebeln
                       AND ekbeebelp EQ msegebelp
                       AND ekbe~zekkn EQ '00'
                       AND ekbe~vgabe EQ '1'
                       AND ekbegjahr EQ msegmjahr
                       AND ekbebelnr EQ msegmblnr
                       AND ekbebuzei EQ msegzeile
              JOIN ekpo ON ekpoebeln EQ ekbeebeln
                       AND ekpoebelp EQ ekbeebelp
              JOIN ekko ON ekkoebeln EQ ekpoebeln
              JOIN lfa1 ON lfa1lifnr EQ ekkolifnr
    WHERE mkpf~budat IN so_budat
      AND mkpf~bldat IN so_bldat
      AND mkpf~vgart EQ 'WE'
      AND mseg~bwart IN so_bwart
      AND mseg~matnr IN so_matnr
      AND mseg~werks IN so_werks
      AND mseg~lifnr IN so_lifnr
      AND mseg~ebeln IN so_ebeln
      AND ekko~ekgrp IN so_ekgrp
      AND ekko~bukrs IN so_bukrs
      AND ekpo~matkl IN so_matkl
      AND ekko~bstyp IN so_bstyp
      AND ekpo~loekz EQ space
      AND ekpo~plifz IN so_plifz.
Thanks & Regards,
Manoj Kumar .Thatha
Moderator message - Please see Please Read before Posting in the Performance and Tuning Forum before posting and please use code tags when posting code - post locked
Edited by: Rob Burbank on Feb 4, 2010 9:03 AM

Performance issue with select query and for all entries.

hi,
i have a report to be performance tuned.
the database table has around 20 million entries and 25 fields.
so, the report fetches the distinct values of two fields using one select query.
so, the first select query fetches around 150 entries from the table for 2 fields.
then it applies some logic and eliminates some entries and makes entries around 80-90...
and then it again applies the select query on the same table using for all entries applied on the internal table with 80-90 entries...
in short,
it accesses the same database table twice.
so, i tried to get the database table in internal table and apply the logic on internal table and delete the unwanted entries.. but it gave me memory dump, and it wont take that huge amount of data into abap memory...
is around 80-90 entries too much for using "for all entries"?
the logic that is applied to eliminate the entries from internal table is too long, and hence cannot be converted into where clause to convert it into single select..
i really cant find the way out...
please help.

chinmay kulkarni wrote:Chinmay,
Even though you tried to ask the question with detailed explanation, unfortunately it is still not clear.
It is perfectly fine to access the same database twice. If that is working for you, I don't think there is any need to change the logic. As Rob mentioned, 80 or 8000 records is not a problem in "for all entries" clause.
>
> so, i tried to get the database table in internal table and apply the logic on internal table and delete the unwanted entries.. but it gave me memory dump, and it wont take that huge amount of data into abap memory...
>
It is not clear what you tried to do here. Did you try to bring all 20 million records into an internal table? That will certainly cause the program to short dump with memory shortage.
> the logic that is applied to eliminate the entries from internal table is too long, and hence cannot be converted into where clause to convert it into single select..
>
That is fine. Actually, it is better (performance wise) to do much of the work in ABAP than writing a complex WHERE clause that might bog down the database.

Performance issues with respect scheme registration,select & insert query

I am facing performance issues with respect to schema registration,Select & insert query towards 10.2.0.3 version.It is taking around 45 minutes to register schema and it is taking around 5 min to insert a single document into xml db where as it was taking less than min to insert a single document into xml db of 9.2.0.6 version.Would like to know the issue and solution to resolve this issue.Please help me out on this as it is very urgent for me

Since it appears that this is an XML DB specific question, you're probably better off posting in the XML DB. The folks over there have much more experience with the ins and outs of that particular product.
Justin

Performance issue with view selection after migration from oracle to MaxDb

Hello,
After the migration from oracle to MaxDb we have serious performance issues with a lot of our tableview selections.
Does anybody know about this problem and how to solve it ??
Best regards !!!
Gert-Jan

Hello Gert-Jan,
most probably you need additional indexes to get better performance.
Using the command monitor you can identify the long running SQL statements and check the optimizer access strategy. Then you can decide which indexes might help.
If this is about an SAP system, you can find additional information about performance analysis in SAP notes 725489 and 819641.
SAP Hosting provides the so-called service 'MaxDB Migration Support' to help you in such cases. The service description can be found here:
http://www.saphosting.de/mediacenter/pdfs/solutionbriefs/MaxDB_de.pdf
http://www.saphosting.com/mediacenter/pdfs/solutionbriefs/maxDB-migration-support_en.pdf.
Best regards,
Melanie Handreck

Performance issues with Imac intel 2011 27 inch..

I have an 2011 imac 3,4 GHz Intel Core i7 with 16 GB 1333 MHz DDR3 RAM.
Since a few months i noticed performance issues with FCPX, where before it would run through video it shows sometimes the color ball. Now the computer is slow in starting up and shutting down also. Ran disk utility but to no avail. I am now considering reinstalling mavericks.
But I ran etrecheck.
here are the results, please who can help me? I use this computer to edit and about everything else.
copied:
Problem description:
slow start and slow quit of computer. Performance issues with fcpx and other programms.
EtreCheck version: 2.1.8 (121)
Report generated 6 maart 2015 21:49:31 CET
Download EtreCheck from http://etresoft.com/etrecheck
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 4 GB DDR3 1333 MHz ok
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 Mar 6, 2015, 08:15:56 PM /Library/Logs/DiagnosticReports/Mail_2015-03-06-201556_[redacted].hang

Problem description:
disk problems
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Diagnostics Information: ℹ️
 Mar 7, 2015, 01:56:19 PM Self test - passed
 Mar 6, 2015, 08:15:56 PM /Library/Logs/DiagnosticReports/Mail_2015-03-06-201556_[redacted].hang

Issue while clearing open line items

Hi team,
While clearing open line items for vendors, customers, and GL's system is posting new line items. It should post without new line items. Example
Customer is having debit and credit line items with same amount i am going to clearing manually thru f-32 here sytem is posting new document with new line items. It should post without line items. I have selected Negetive postings permited check box in OBY6. I have not selected check box in document types. Do i need to change in document type also or i missed anything in settings pls help me to overcome this issue.
Regards,
Nagaraju.

Dear:
The option to create a clearing document WITH or WITHOUT line items depend on the fields of the structure KONTAB_1ST if all the fields are equal in the documents the clearing document will be generated and posted without line items
Please check OSS note 95077. Check the settings in
IMG >Financial Accounting (New) >General Ledger Accounting (New) >
Business Transactions >Document Splitting >Activate Document Splitting
Check the following link for the same
F.13 clearing Document contains Lineitems
Regards

Service Procurement with Multiple Service Line items

Dear Experts,
We have the following Business Scenario. Request your inputs in addressing this issue.
Business scenario : Most of the Procurement for our client is of services. So, we need to configure services with multiple service line items. This Shopping cart to create PR in ECC. PR to PO conversion to take place in ECC. Now onwards client needs Supplier integration for confirmation of services and sending invoices by Vendor.
Guidance required in the following
1 In Shop functionality if we select services, PR is being created in ECC with only one Service Line item. Whereas if we go for Request functionality, then always it is routing to Bidding process (which is not required for client). Can we create SC with multiple service line items with out request functionality?? Or Can we root the Request functionality with out Bidding process??
2 If we convert the PR to PO in ECC (Classic Scenario), can we go for SUS integration. In such case which is the best way of supplier integration. Can you please guide us on basic steps on installation (can we go for different client in the same server) and configuration.
Request your inputs in this regard
Thank you,
Ravi

Hello,
We suffered the same problem in our company. We have found a way to work with the SRM shopping cart multiple line rollup to ECC single line purchase order.
If the multiple shopping cart line items contain the same location code and cost assignment they will rollup into one ECC purchase order. The system seems to 'think' it is helping you by consolidating your information.
In the Basic Data section of the shopping cart there is a Service line item field. If you enter something in each in that field for each line it will keep it's own line in ECC.
Your implementation may differ slightly from ours but I recommend playing with the location code, cost assignment and Basic Data service line fields until you can see a pattern. Basically you need to find a method to make each line a separate entity so they don't rollup.
Good luck,
Corinne

Performance issues with pipelined table functions

I am testing pipelined table functions to be able to re-use the base_query function. Contrary to my understanding, the with_pipeline procedure runs 6 time slower than the legacy no_pipeline procedure. Am I missing something? The processor function is from [url http://www.oracle-developer.net/display.php?id=429]improving performance with pipelined table functions .
Edit: The underlying query returns 500,000 rows in about 3 minutes. So there are are no performance issues with the query itself.
Many thanks in advance.
CREATE OR REPLACE PACKAGE pipeline_example
IS
 TYPE resultset_typ IS REF CURSOR;
 TYPE row_typ IS RECORD (colC VARCHAR2(200), colD VARCHAR2(200), colE VARCHAR2(200));
 TYPE table_typ IS TABLE OF row_typ;
 FUNCTION base_query (argA IN VARCHAR2, argB IN VARCHAR2)
 RETURN resultset_typ;
 c_default_limit CONSTANT PLS_INTEGER := 100;
 FUNCTION processor (
 p_source_data IN resultset_typ,
 p_limit_size IN PLS_INTEGER DEFAULT c_default_limit)
 RETURN table_typ
 PIPELINED
 PARALLEL_ENABLE(PARTITION p_source_data BY ANY);
 PROCEDURE with_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ);
 PROCEDURE no_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ);
END pipeline_example;
CREATE OR REPLACE PACKAGE BODY pipeline_example
IS
 FUNCTION base_query (argA IN VARCHAR2, argB IN VARCHAR2)
 RETURN resultset_typ
 IS
 o_resultset resultset_typ;
 BEGIN
 OPEN o_resultset FOR
 SELECT colC, colD, colE
 FROM some_table
 WHERE colA = ArgA AND colB = argB;
 RETURN o_resultset;
 END base_query;
 FUNCTION processor (
 p_source_data IN resultset_typ,
 p_limit_size IN PLS_INTEGER DEFAULT c_default_limit)
 RETURN table_typ
 PIPELINED
 PARALLEL_ENABLE(PARTITION p_source_data BY ANY)
 IS
 aa_source_data table_typ;-- := table_typ ();
 BEGIN
 LOOP
 FETCH p_source_data
 BULK COLLECT INTO aa_source_data
 LIMIT p_limit_size;
 EXIT WHEN aa_source_data.COUNT = 0;
 /* Process the batch of (p_limit_size) records... */
 FOR i IN 1 .. aa_source_data.COUNT
 LOOP
 PIPE ROW (aa_source_data (i));
 END LOOP;
 END LOOP;
 CLOSE p_source_data;
 RETURN;
 END processor;
 PROCEDURE with_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ)
 IS
 BEGIN
 OPEN o_resultset FOR
 SELECT /*+ PARALLEL(t, 5) */ colC,
 SUM (CASE WHEN colD > colE AND colE != '0' THEN colD / ColE END)de,
 SUM (CASE WHEN colE > colD AND colD != '0' THEN colE / ColD END)ed,
 SUM (CASE WHEN colD = colE AND colD != '0' THEN '1' END) de_one,
 SUM (CASE WHEN colD = '0' OR colE = '0' THEN '0' END) de_zero
 FROM TABLE (processor (base_query (argA, argB),100)) t
 GROUP BY colC
 ORDER BY colC
 END with_pipeline;
 PROCEDURE no_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ)
 IS
 BEGIN
 OPEN o_resultset FOR
 SELECT colC,
 SUM (CASE WHEN colD > colE AND colE != '0' THEN colD / ColE END)de,
 SUM (CASE WHEN colE > colD AND colD != '0' THEN colE / ColD END)ed,
 SUM (CASE WHEN colD = colE AND colD != '0' THEN 1 END) de_one,
 SUM (CASE WHEN colD = '0' OR colE = '0' THEN '0' END) de_zero
 FROM (SELECT colC, colD, colE
 FROM some_table
 WHERE colA = ArgA AND colB = argB)
 GROUP BY colC
 ORDER BY colC;
 END no_pipeline;
END pipeline_example;
ALTER PACKAGE pipeline_example COMPILE;Edited by: Earthlink on Nov 14, 2010 9:47 AM
Edited by: Earthlink on Nov 14, 2010 11:31 AM
Edited by: Earthlink on Nov 14, 2010 11:32 AM
Edited by: Earthlink on Nov 20, 2010 12:04 PM
Edited by: Earthlink on Nov 20, 2010 12:54 PM

Earthlink wrote:
Contrary to my understanding, the with_pipeline procedure runs 6 time slower than the legacy no_pipeline procedure. Am I missing something? Well, we're missing a lot here.
Like:
- a database version
- how did you test
- what data do you have, how is it distributed, indexed
and so on.
If you want to find out what's going on then use a TRACE with wait events.
All nessecary steps are explained in these threads:
HOW TO: Post a SQL statement tuning request - template posting
http://oracle-randolf.blogspot.com/2009/02/basic-sql-statement-performance.html
Another nice one is RUNSTATS:
http://asktom.oracle.com/pls/asktom/ASKTOM.download_file?p_file=6551378329289980701

Performance issues with version enable partitioned tables?

Hi all,
Are there any known performance issues with version enable partitioned tables?
Ive been doing some performance testes with a large version enable partitioned table and it seems that OCB optimiser is choosing very expensive plans during merge operations.
Tanks in advance,
Vitor
Example:
 Object Name Rows Bytes Cost Object Node In/Out PStart PStop
UPDATE STATEMENT Optimizer Mode=CHOOSE 1 249
UPDATE SIG.SIG_QUA_IMG_LT
NESTED LOOPS SEMI 1 266 249
PARTITION RANGE ALL 1 9
TABLE ACCESS FULL SIG.SIG_QUA_IMG_LT 1 259 2 1 9
VIEW SYS.VW_NSO_1 1 7 247
NESTED LOOPS 1 739 247
NESTED LOOPS 1 677 247
NESTED LOOPS 1 412 246
NESTED LOOPS 1 114 244
INDEX RANGE SCAN WMSYS.MODIFIED_TABLES_PK 1 62 2
INDEX RANGE SCAN SIG.QIM_PK 1 52 243
TABLE ACCESS BY GLOBAL INDEX ROWID SIG.SIG_QUA_IMG_LT 1 298 2 ROWID ROW L
INDEX RANGE SCAN SIG.SIG_QUA_IMG_PKI$ 1 1
INDEX RANGE SCAN WMSYS.WM$NEXTVER_TABLE_NV_INDX 1 265 1
INDEX UNIQUE SCAN WMSYS.MODIFIED_TABLES_PK 1 62
/* Formatted on 2004/04/19 18:57 (Formatter Plus v4.8.0) */
UPDATE /*+ USE_NL(Z1) ROWID(Z1) */sig.sig_qua_img_lt z1
SET z1.nextver =
SYS.ltutil.subsversion
(z1.nextver,
SYS.ltutil.getcontainedverinrange (z1.nextver,
'SIG.SIG_QUA_IMG',
'NpCyPCX3dkOAHSuBMjGioQ==',
4574,
4575
4574
WHERE z1.ROWID IN (
(SELECT /*+ ORDERED USE_NL(T1) USE_NL(T2) USE_NL(J2) USE_NL(J3)
INDEX(T1 QIM_PK) INDEX(T2 SIG_QUA_IMG_PKI$)
INDEX(J2 WM$NEXTVER_TABLE_NV_INDX) INDEX(J3 MODIFIED_TABLES_PK) */
t2.ROWID
FROM (SELECT /*+ INDEX(WM$MODIFIED_TABLES MODIFIED_TABLES_PK) */
UNIQUE VERSION
FROM wmsys.wm$modified_tables
WHERE table_name = 'SIG.SIG_QUA_IMG'
AND workspace = 'NpCyPCX3dkOAHSuBMjGioQ=='
AND VERSION > 4574
AND VERSION <= 4575) j1,
sig.sig_qua_img_lt t1,
sig.sig_qua_img_lt t2,
wmsys.wm$nextver_table j2,
(SELECT /*+ INDEX(WM$MODIFIED_TABLES MODIFIED_TABLES_PK) */
UNIQUE VERSION
FROM wmsys.wm$modified_tables
WHERE table_name = 'SIG.SIG_QUA_IMG'
AND workspace = 'NpCyPCX3dkOAHSuBMjGioQ=='
AND VERSION > 4574
AND VERSION <= 4575) j3
WHERE t1.VERSION = j1.VERSION
AND t1.ima_id = t2.ima_id
AND t1.qim_inf_esq_x_tile = t2.qim_inf_esq_x_tile
AND t1.qim_inf_esq_y_tile = t2.qim_inf_esq_y_tile
AND t2.nextver != '-1'
AND t2.nextver = j2.next_vers
AND j2.VERSION = j3.VERSION))

Hello Vitor,
There are currently no known issues with version enabled tables that are partitioned. The merge operation may need to access all of the partitions of a table depending on the data that needs to be moved/copied from the child to the parent. This is the reason for the 'Partition Range All' step in the plan that you provided. The majority of the remaining steps are due to the hints that have been added, since this plan has provided the best performance for us in the past for this particular statement. If this is not the case for you, and you feel that another plan would yield better performance, then please let me know and I will take a look at it.
One suggestion would be to make sure that the table was been recently analyzed so that the optimizer has the most current data about the table.
Performance issues are very hard to fix without a reproducible test case, so it may be advisable to file a TAR if you continue to have significant performance issues with the mergeWorkspace operation.
Thank You,
Ben

Performance issue with HRALXSYNC report..

HI,
I'm facing performance issue with the HRALXSYNC report. As this is Standard report, Can any body suggest me how to optimize the standard report..
Thanks in advance.
Saleem Javed
Moderator message: Please Read before Posting in the Performance and Tuning Forum, also look for existing SAP notes and/or send a support message to SAP.
Edited by: Thomas Zloch on Aug 23, 2011 4:17 PM

Sreedhar,
Thanks for you quick response. Indexes were not created for VBPA table. basis people tested by creating indexes and gave a report that it is taking more time with indexes than regular query optimizer. this is happening in the funtion forward_ag_selection.
select vbeln lifnr from vbpa
     appending corresponding fields of table lt_select
     where     vbeln in ct_vbeln
     and     posnr eq posnr_initial
     and     parvw eq 'SP'
     and     lifnr in it_spdnr.
I don't see any issue with this query. I give more info later

Performance Issue with VL06O report

Hi,
We are having performance issue with VL06O report, when run with forwarding agent. It is taking about an hour with forwarding agent. The issue is with VBPA table and we found one OSS note, but it is for old versions. ours is ECC 5.0. Can anybody know the solution? If you guys need more information, please ask me.
Thanks,
Surya

Sreedhar,
Thanks for you quick response. Indexes were not created for VBPA table. basis people tested by creating indexes and gave a report that it is taking more time with indexes than regular query optimizer. this is happening in the funtion forward_ag_selection.
select vbeln lifnr from vbpa
     appending corresponding fields of table lt_select
     where     vbeln in ct_vbeln
     and     posnr eq posnr_initial
     and     parvw eq 'SP'
     and     lifnr in it_spdnr.
I don't see any issue with this query. I give more info later

Performance issue with selection of line items.

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