Performance Tunning in report

Dear All,
we have one report. if i run the report then it will take 2 to 4 hrs.
I have checked main query & formula columns, all the query reading the index.
How can i Tune this report & how can reduce the running time.
Pls help me.

Wrong forum, betters ask in the SQL-forum.
Apart from that: have a look at the explain-plan and check the cost of your select-statement. If you are using the cost-based optimizer and have a very low cost for the statement but the time it takes to complete is very high, you may have to regather the table statistics. Wrong or old table statistics can create problems for even higly optimized select-statements.
Regards
Markus

Similar Messages

Performance Tunning - Oracle Reports 6i

Hi Gurus,
I have an Oracle Apps Reports 6i with a formula column having so much of conditions making the reports to take long time to get completed. Its taking 20 mins to complete. Please your help on this.
Thanks,
Genoo

Hi
what is your database version?
what is your table size ?
How many RAM do you have in this server?
However, in Reports, the default optimizer mode is ALL_ROWS, this optimizer mode let you have the best system through put.
In SQL*Plus, you have to set the optimizer mode to ALL_ROWS to tune the report SQL performance:
Issue
ALTER SESSION SET OPTIMIZER_MODE=ALL_ROWS;
or add an optimizer hint in the SQL statement
Select /*+ ALL_ROWS */
from ....

Performance tunning in exraction.

hii frnds,
can anyone plz tell me the performance tunning in extraction,in report,in dataloading.plz reply me in pointwise..
Thanks
Rosy
Please search for available information before posting.
Edited by: kishan P on Jan 24, 2012 10:57 AM

Hi Rosy,
Please check the below docs,
http://www.tli-usa.com/download/Expert_Tips_and_New_Techniques_for_Optimizing_Data_Load_and_Query_Performance__Part_One_.pdf
http://www.tli-usa.com/download/Expert_Tips_and_New_Techniques_for_Optimizing_Data_Load_and_Query_Performance__Part_Two_.pdf
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/08f1b622-0c01-0010-618c-cb41e12c72be?QuickLink=index&overridelayout=true
Thanks,
Vinod

Performance tunning

Dear Experts,
I am urgently looking forward to some comprehensive documentation on Performance tunning elaborating on the issues like:-
1.)In what instances should we do performance tunning....
2.) why it is neccessary and
3.) what r the various methods of performance tunnig....
I shall be highly obliged, if anyone can point me to relevant links, or send me illustrative documentation on these issues in performance tunning at [email protected]
ur help shall be thankfully/duely acknowledged,
regards,
shalini.
Message was edited by: shalini gupta

Shalini ,
Performance tuning is at various levels :
1. Data Modeling
2. Data Loading
3. Report design
4. Reporting
It is a mix and match of the above and other factors you might need to consider could also be something like:
1. DB being used
2. Partitioning
3. System parameters
4. Authorization Design...
All this depends on the level of performance tuning you want to do:
https://websmp204.sap-ag.de/~sapidb/011000358700001890502003
This is a link to the support portal and I have sent the same across to you. Hope it is useful.
Arun

How to do Performance tunning in OBIEE

Hi All,
We are using OBIEE 10.3.4 version on windows envorinment .In our OBIEE project we are using 9 reports my requriment is we need to do performance tunning for OBIEE side.For eace report accessing its taking around 80 sec.We need to decrease these accessing time,is there any possibility to access all the reports with less response time in OBIEE side.
Could you anyone suggest how to do performance tunning in OBIEE side.
Thanks,
Vijay.

Vijay,
Plz refer
http://www.business-intelligence-quotient.com/?p=119
http://prolynxuk.com/blog/?p=173
http://businessdecisionsystems.com/blog/?p=486
Here is the section from the BIEE admin guide:
=======================
Usage Examples
This section provides a few examples of how to use Oracle hints in conjunction with the Oracle BI Server. For more information about Oracle hints, refer to the Oracle SQL Reference documentation for the version of the Oracle server that you use.
Index Hint
The Index hint instructs the optimizer to scan a specified index rather than a table. The following hypothetical example explains how you would use the Index hint. You find queries against the ORDER_ITEMS table to be slow. You review the query optimizer's execution plan and find the FAST_INDEX index is not being used. You create an Index hint to force the optimizer to scan the FAST_INDEX index rather than the ORDER_ITEMS table. The syntax for the Index hint is index(table_name, index_name). To add this hint to the repository, navigate to the Administration Tool's Physical Table dialog box and type the following text in the Hint field:
index(ORDER_ITEMS, FAST_INDEX)
Leading Hint
The Leading hint forces the optimizer to build the join order of a query with a specified table. The syntax for the Leading hint is leading(table_name). If you were creating a foreign key join between the Products table and the Sales Fact table and wanted to force the optimizer to begin the join with the Products table, you would navigate to the Administration Tool's Physical Foreign Key dialog box and type the following text in the Hint field:
leading(Products)
So, the table names "order_items" and "products" in the above documentation will not be the same after BIEE puts aliases on them.
============
Hope this is useful..
Edited by: Deepak Gupta on Aug 1, 2011 7:18 AM

Performance issue in Report (getting time out error)

Hi experts,
I am doing Performance for a Report (getting time out error)
Please see the code below and .
while looping internal table IVBAP after 25 minutes its showing time out error at this poit ->
SELECT MAX( ERDAT ) .
please send alternate code for this .
Advance thanks
from
Nagendra
Get Sales Order Details
CLEAR IVBAP.
REFRESH IVBAP.
SELECT VBELN POSNR MATNR NETWR KWMENG WERKS FROM VBAP
 INTO CORRESPONDING FIELDS OF TABLE IVBAP
 FOR ALL ENTRIES IN IVBAK
 WHERE VBELN = IVBAK-VBELN
 AND MATNR IN Z_MATNR
 AND WERKS IN Z_WERKS
 AND ABGRU = ' '.
Check for Obsolete Materials - Get Product Hierarhy/Mat'l Description
SORT IVBAP BY MATNR WERKS.
CLEAR: WK_MATNR, WK_WERKS, WK_PRDHA, WK_MAKTX,
 WK_BLOCK, WK_MMSTA, WK_MSTAE.
LOOP AT IVBAP.
 CLEAR WK_INVDATE. "I6677.sn
 SELECT MAX( ERDAT ) FROM VBRP INTO WK_INVDATE WHERE
 AUBEL EQ IVBAP-VBELN AND
 AUPOS EQ IVBAP-POSNR.
 IF SY-SUBRC = 0.
 MOVE WK_INVDATE TO IVBAP-INVDT.
 MODIFY IVBAP.
 ENDIF. "I6677.e n
 SELECT SINGLE * FROM MBEW WHERE "I6759.sn
 MATNR EQ IVBAP-MATNR AND
 BWKEY EQ IVBAP-WERKS AND
 BWTAR EQ SPACE.
 IF SY-SUBRC = 0.
 MOVE MBEW-STPRS TO IVBAP-STPRS.
 IVBAP-TOT = MBEW-STPRS * IVBAP-KWMENG.
 MODIFY IVBAP.
 ENDIF. "I6759.en
 IF IVBAP-MATNR NE WK_MATNR OR IVBAP-WERKS NE WK_WERKS.
 CLEAR: WK_BLOCK, WK_MMSTA, WK_MSTAE, WK_PRDHA, WK_MAKTX.
 MOVE IVBAP-MATNR TO WK_MATNR.
 MOVE IVBAP-WERKS TO WK_WERKS.
 SELECT SINGLE MMSTA FROM MARC INTO MARC-MMSTA
 WHERE MATNR = WK_MATNR
 AND WERKS = WK_WERKS.
 IF NOT MARC-MMSTA IS INITIAL.
 MOVE '*' TO WK_MMSTA.
 ENDIF.
 SELECT SINGLE LVORM PRDHA MSTAE MSTAV FROM MARA
 INTO (MARA-LVORM, MARA-PRDHA, MARA-MSTAE, MARA-MSTAV)
 WHERE MATNR = WK_MATNR.
 IF ( NOT MARA-MSTAE IS INITIAL ) OR
 ( NOT MARA-MSTAV IS INITIAL ) OR
 ( NOT MARA-LVORM IS INITIAL ).
 MOVE '*' TO WK_MSTAE.
 ENDIF.
 MOVE MARA-PRDHA TO WK_PRDHA.
 SELECT SINGLE MAKTX FROM MAKT INTO WK_MAKTX
 WHERE MATNR = WK_MATNR
 AND SPRAS = SY-LANGU.
 ENDIF.
 IF Z_BLOCK EQ 'B'.
 IF WK_MMSTA EQ ' ' AND WK_MSTAE EQ ' '.
 DELETE IVBAP.
 CONTINUE.
 ENDIF.
 ELSEIF Z_BLOCK EQ 'U'.
 IF WK_MMSTA EQ '' OR WK_MSTAE EQ ''.
 DELETE IVBAP.
 CONTINUE.
 ENDIF.
 ELSE.
 IF WK_MMSTA EQ '' OR WK_MSTAE EQ ''.
 MOVE '*' TO WK_BLOCK.
 ENDIF.
 ENDIF.
 IF WK_PRDHA IN Z_PRDHA. "I4792
 MOVE WK_BLOCK TO IVBAP-BLOCK.
 MOVE WK_PRDHA TO IVBAP-PRDHA.
 MOVE WK_MAKTX TO IVBAP-MAKTX.
 MODIFY IVBAP.
 ELSE. "I4792
 DELETE IVBAP. "I4792
 ENDIF. "I4792
 IF NOT Z_ALNUM[] IS INITIAL. "I9076
 SELECT SINGLE * FROM MAEX "I9076
 WHERE MATNR = IVBAP-MATNR "I9076
 AND ALNUM IN Z_ALNUM. "I9076
 IF SY-SUBRC <> 0. "I9076
 DELETE IVBAP. "I9076
 ENDIF. "I9076
 ENDIF. "I9076
ENDLOOP.

Hi Nagendra!
Get Sales Order Details
CLEAR IVBAP.
REFRESH IVBAP.
check ivbak is not initial
SELECT VBELN POSNR MATNR NETWR KWMENG WERKS FROM VBAP
INTO CORRESPONDING FIELDS OF TABLE IVBAP
FOR ALL ENTRIES IN IVBAK
WHERE VBELN = IVBAK-VBELN
AND MATNR IN Z_MATNR
AND WERKS IN Z_WERKS
AND ABGRU = ' '.
Check for Obsolete Materials - Get Product Hierarhy/Mat'l Description
SORT IVBAP BY MATNR WERKS.
CLEAR: WK_MATNR, WK_WERKS, WK_PRDHA, WK_MAKTX,
WK_BLOCK, WK_MMSTA, WK_MSTAE.
avoid select widin loop. instead do selection outside loop.u can use read statement......and then loop if required.
LOOP AT IVBAP.
CLEAR WK_INVDATE. "I6677.sn
SELECT MAX( ERDAT ) FROM VBRP INTO WK_INVDATE WHERE
AUBEL EQ IVBAP-VBELN AND
AUPOS EQ IVBAP-POSNR.
IF SY-SUBRC = 0.
MOVE WK_INVDATE TO IVBAP-INVDT.
MODIFY IVBAP.
ENDIF. "I6677.e n
SELECT SINGLE * FROM MBEW WHERE "I6759.sn
MATNR EQ IVBAP-MATNR AND
BWKEY EQ IVBAP-WERKS AND
BWTAR EQ SPACE.
IF SY-SUBRC = 0.
MOVE MBEW-STPRS TO IVBAP-STPRS.
IVBAP-TOT = MBEW-STPRS * IVBAP-KWMENG.
MODIFY IVBAP.
ENDIF. "I6759.en
IF IVBAP-MATNR NE WK_MATNR OR IVBAP-WERKS NE WK_WERKS.
CLEAR: WK_BLOCK, WK_MMSTA, WK_MSTAE, WK_PRDHA, WK_MAKTX.
MOVE IVBAP-MATNR TO WK_MATNR.
MOVE IVBAP-WERKS TO WK_WERKS.
SELECT SINGLE MMSTA FROM MARC INTO MARC-MMSTA
WHERE MATNR = WK_MATNR
AND WERKS = WK_WERKS.
IF NOT MARC-MMSTA IS INITIAL.
MOVE '*' TO WK_MMSTA.
ENDIF.
SELECT SINGLE LVORM PRDHA MSTAE MSTAV FROM MARA
INTO (MARA-LVORM, MARA-PRDHA, MARA-MSTAE, MARA-MSTAV)
WHERE MATNR = WK_MATNR.
IF ( NOT MARA-MSTAE IS INITIAL ) OR
( NOT MARA-MSTAV IS INITIAL ) OR
( NOT MARA-LVORM IS INITIAL ).
MOVE '*' TO WK_MSTAE.
ENDIF.
MOVE MARA-PRDHA TO WK_PRDHA.
SELECT SINGLE MAKTX FROM MAKT INTO WK_MAKTX
WHERE MATNR = WK_MATNR
AND SPRAS = SY-LANGU.
ENDIF.
IF Z_BLOCK EQ 'B'.
IF WK_MMSTA EQ ' ' AND WK_MSTAE EQ ' '.
DELETE IVBAP.
CONTINUE.
ENDIF.
ELSEIF Z_BLOCK EQ 'U'.
IF WK_MMSTA EQ '' OR WK_MSTAE EQ ''.
DELETE IVBAP.
CONTINUE.
ENDIF.
ELSE.
IF WK_MMSTA EQ '' OR WK_MSTAE EQ ''.
MOVE '*' TO WK_BLOCK.
ENDIF.
ENDIF.
IF WK_PRDHA IN Z_PRDHA. "I4792
MOVE WK_BLOCK TO IVBAP-BLOCK.
MOVE WK_PRDHA TO IVBAP-PRDHA.
MOVE WK_MAKTX TO IVBAP-MAKTX.
MODIFY IVBAP.
ELSE. "I4792
DELETE IVBAP. "I4792
ENDIF. "I4792
IF NOT Z_ALNUM[] IS INITIAL. "I9076
SELECT SINGLE * FROM MAEX "I9076
WHERE MATNR = IVBAP-MATNR "I9076
AND ALNUM IN Z_ALNUM. "I9076
IF SY-SUBRC 0. "I9076
DELETE IVBAP. "I9076
ENDIF. "I9076
ENDIF. "I9076
endloop.
U have used many select queries widin loop-endloop which is a big hindrance as far as performance is concerned.Avoid such practice.
Thanks
Deepika

Performance of a Report Based On VirtualProvider

Dear BW experts,
We have created a new BEx 3.x report, which contains about 6 queries, and 2 pre queries.
The report runs very slowly, the upload time is about 40 seconds.
The report itself contains one tab with 11 tables.
The MultiProvider that the queries are based on is a virtual InfoCube, so we can't use aggregates.
Could someone advice us how to optimize the performance of the report?
Thanks you in advance.
Best Regards,
Inbal.

Hi,
Query variables are not passed only to the virtual provider by default, i.e enter dataset of the extractor is pulled the data manager and then it is filtered out which could the issue for the long runtimes.
If the datasource of the virtual provider has selections then we could passed those from the query to the datasource while query execution at the inverse start routine and reduce the amount of data actual pulled by the virtual provider and hence improve the performance of the query.
Below is the link to the sap documentation on inverse routine.
http://help.sap.com/saphelp_erp60_sp/helpdata/en/45/f5af4a4db53482e10000000a1553f6/content.htm
Thanks,
Arun

How to improve the query performance in to report level and designer level

How to improve the query performance in to report level and designer level......?
Plz let me know the detail view......

first its all based on the design of the database, universe and the report.
at the universe Level, you have to check your Contexts very well to get the optimal performance of the universe and also your joins, keep your joins with key fields, will give you the best performance.
at the report level, try to make the reports dynamic as much as you can, (Parameters) and so on.
and when you create a paremeter try to get it match with the key fields in the database.
good luck
Amr

Low Performance in the report with cell defition

Hi all,
In one of our queries (3.5), we had to use lots of cell definition. And after execution of the report, it stays in "Formatting Result Area" and "Retrieving Result from BW Server" for a very long time (about 30 minutes).
There is already aggregate on the infoprovider and report uses it.
Is there any way to increase reporting performance of a report with lots of cell definitions ?
Thanks
SP

Arun,
Can you please explain what is precalculation and how to use it in Bex?
Thanks in advance.
SP

Performance issue in report programming..

Hi,
I am using one customized Function Module whithin a loop of internal table containing fields of PROJ table for about 200 records . And in the source code of function module there is set of select queries for different tables like COSS COSP , AUFK , PRPS , BPJA PRHI , AFPO , AFKO etc . so due to that my performance of a report is very low , So how can i improve it .
Is there any other way to change a code.
regards
Chetan

Hi John ,
I am using SAP ECC 6.0 .
The report is used to update a ztable which is already created for Project System plan data .
So i am calling function module which will return a internal table , I am appending this to other internal table and refreshing it , like this I am doing for each project within a loop of PROJ internal table , finaly by using the final itab I am modifying the ztable fields.
Code is as below..
select pspid from proj client specified into corresponding fields of
          table t_itab1 where mandt = sy-mandt
                          and pspnr in s_pspnr
                          and vbukr = p_vbukr
                          and prctr in s_prctr.
loop at t_itab1.
    l_pspid = t_itab1-pspid.
CALL FUNCTION 'ZPS_FUN_BUDGETS'
      EXPORTING
        L_PSPID       = l_pspid
        L_VBUKR       = p_vbukr
      TABLES
        T_DATA        = t_itab2 .
loop at t_itab2.
      append t_itab2 to t_itab.
    endloop.
    clear   : t_itab2.
    refresh : t_itab2.
endloop.
LOOP AT t_itab.
***MODIFY ZTABLE.*****
ENDLOOP.
Regards
Chetan

Performance issue of report

Hi Friends,
Can you please give me the exact answer for the below question.
Suppose my report program is taking long time to execute, what are the reasons that may effect the report.
and what are the remedies should i follow, please provide appropriate answer.
Advance thanks,
Chandra.

hi,,
Go to tranx SE30 here you will get Tips and Trciks for the performance tuning.
Check it carefully and check whether you can do something for improving performance of you code.
It will help you a lot and will reduce your Execution time.
If you are using READ TABLE command in your program then you can check whether you can use HASHED TABLE it will improve performance of your code a lot but it has some restrictions.
I will explain some of the points to improve the performance of the report try to write code according to that ok.
SOME STEPS USED TO IMPROVE UR PERFORMANCE:
1. Avoid using SELECT...ENDSELECT... construct and use SELECT ... INTO TABLE.
2. Use WHERE clause in your SELECT statement to restrict the volume of data retrieved.
3. Design your Query to Use as much index fields as possible from left to right in your WHERE statement
4. Use FOR ALL ENTRIES in your SELECT statement to retrieve the matching records at one shot.
5. Avoid using nested SELECT statement, SELECT within LOOPs.
6. Avoid using INTO CORRESPONDING FIELDS OF TABLE. Instead use INTO TABLE.
7. Avoid using SELECT * and Select only the required fields from the table.
8. Avoid nested loops when working with large internal tables.
9. Use assign instead of into in LOOPs for table types with large work areas
10. When in doubt call transaction SE30 and use the examples and check your code
11. Whenever using READ TABLE use BINARY SEARCH addition to speed up the search. Be sure to sort the internal table before binary search. This is a general thumb rule but typically if you are sure that the data in internal table is less than 200 entries you need not do SORT and use BINARY SEARCH since this is an overhead in performance.
12. Use "CHECK" instead of IF/ENDIF whenever possible.
13. Use "CASE" instead of IF/ENDIF whenever possible.
14. Use "MOVE" with individual variable/field moves instead of "MOVE-
CORRESPONDING", creates more coding but is more effcient.
Reward points if helpful.
regards,
rekha

Performance Issue Crystal Report and Oracle

Hello,
We have one procedure that takes 3 input parameters and returns Cursor from Procedure that is used to design the report. There is no caluculation involved here and cursor is opended dynamically. We are using Oracle Native connection.
When we click on preview button it takes lots of time ( >10 Mins) to show complete data. While we call the same procedure in application and generate HTML report using Cursor returned it is done in < 15 Seconds. Can some point me where to look into to improve the performance of Crystal Report.
DB: Oracle 10G
CR: Version XI

Hi Vadiraja
The performance of a report is related to:
External factors:
1. The amount of time the database server takes to process the SQL query.
( Crystal Reports send the SQL query to the database, the database process it, and returns the data set to Crystal Reports. )
2. Network traffics.
3. Local computer processor speed.
( When Crystal Reports receives the data set, it generates a temp file to further filter the data when necessary, as well as to group, sort, process formulas, ... )
4. The number of record returned
( If a sql query returns a large number of records, it will take longer to format and display than if was returning a smaller data set.)
Report design:
1. Where is the Record Selection evaluated.
Ensure your Record Selection Formula can be translated in SQL, so the data can be filter down on the server, otherwise the filtering will be done in a temp file on the local machine which will be much slower.
They have many functions that cannot be translated in SQL because they may not have a standard SQL for it.
For example, control structure like IF THEN ELSE cannot be translated into SQL. It will always be evaluated in Crystal Reports. But if you use an IF THEN ELSE on a parameter, it will convert the result of the condition to SQL, but as soon as uses database fileds in the conditions it will not be translated in SQL.
2. How many subreports the report contains and in section section they are located.
Minimise the number of subreports used, or avoid using subreports if possible because
subreports are reports within a report, and if you have a subreport in a details section, and the report returns 100 records, the subreport will be evaluated 100 times, so it will query the database 100 times. It is often the biggest factor why a report takes a long time to preview.
3. How many records will be returned to the report.
Large number of records will slow down the preview of the reports.
Ensure you only returns the necessary data on the report, by creating a Record Selection Formula, or basing your report off a Stored Procedure, or a Command Object that only returns the desired data set.
4. Do you use the special field "Page N of M", or "TotalPageCount"
When the special field "Page N of M" or "TotalPageCount" is used on a report, it will have to generate each page of the report before it displays the first page, therfore it will take more time to display the first page of the report.
If you want to improve the speed of a report, remove the special field "Page N of M" or "Total Page Count" or formula that uses the function "TotalPageCount". If those aren't use when you view a report it only format the page requested.
It won't format the whole report.
5. Link tables on indexed fields whenever possible.
6. Remove unused tables, unused formulas, unused running totals from the report.
7. Suppress unnecessary sections.
8. For summaries, use conditional formulas instead of running totals when possible.
9. Whenever possible, limit records through selection, not suppression.
10. Use SQL expressions to convert fields to be used in record selection instead of using formula functions.
For example, if you need to concatenate 2 fields together, instead of doing it in a formula, you can create a SQL Expression Field. It will concatenate the fields on the database server, instead of doing in Crystal Reports. SQL Expression Fields are added to the SELECT clause of the SQL Query send to the database.
11. Using one command as the datasource can be faster if you returns only the desired data set.
It can be faster if the SQL query written only return the desired data.
12. Perform grouping on server
This is only relevant if you only need to return the summary to your report but not the details. It will be faster as less data will be returned to the reports.
Regards
Girish Bhosale

Performance issue webi report-BOXI3.1

Hi,
We have a requirement for a report where we will give user a set of objects (26 u2013 31) to do analysis using interactive viewing feature. Here we are facing severe performance issues and memory issues as the data that we are calling is huge( around 6 million records). At the report level we will be summarizing the data.
No of rows in the report is depending on the no of objects.
Mode of view : Interactive view.
Note:
1. Objects which are using in conditional level those have indexes.
2. No of report level variable are two.
3. Version of Business objects: BOXI3.1
4. OS: Sun Solaris
Please let me know if there are any means by which the memory requirements for the report can be minimized/ performance of the report can be improved.
Thanks,
Subash

Subash,
At the report level we will be summarizing the data ... any means by which the memory requirements for the report can be minimized/ performance of the report can be improved
Is there any way that you can summarize this on the database side versus the report level? The database should be sized with memory and disk space properly to handle these types of summarizations versus expecting the application to perform it.
Thanks,
John

How to optimize the performance of crystal report?

Hi,
-I have to design a crystal report with best possible optimization. Optimization is main concern since report will run against 1-2 million data set. Though I am using parameter to fetch only the required data, required data can go till 1 million records.
-Based on the input passed by the user I have to group the data in report. And for each selected parameter the Detail section I am printing is different. For example:-If user selects store then detail section is different and if user select Host then detail section will be different.
-Report can be grouped by Time Field also. So to full fill this requirement I would have to create a sub report since other parameters are of string type and can be used in one formula to get parameter based grouping in report. However If I try to return Time filed from the same formula I get the errors the "Return type should be of String typeu201D. This forces me to create sub report for Time based grouping. If user selects Time Field to be grouped on, all the information in the main report gets suppressed and only the sub report gets printed.
If user select store, Host and User in parameter to be grouped on, sub report gets suppressed.
Now with the above mentioned points I tried to optimize the report in following way.
-Printing 1 million records in the report does not make sense; hence we wanted to show the summary of all the records in chart section but wanted to print just 5000 records in detailed section. Suppressing detailed section after 5000 records does not help much since suppressing just saves the time in printing and does not limit the number of records to be fetched from the DB.I have a subreport also so it fetches the data 2 times from the DB hence makes the performance of the report worse.
To solve this problem I used command object and put the charts in the subreport and detail in main report.
In main report's Command Object I limited the number to records to be fetched from the DB to 5000 using rownum<5000 but in subreport's Command Object I did not set any limit in the query but I am doing all my aggregation in SQL which means do summary operation in DB and get only summarized data from DB.
-To solve section problem I am using Template object (new feature added in CR 2008).In which I am returning the field based on the "Group By" parameter selected by user.
-For time Field I have created two sub reports, one for chart and other one for details in the same way described in point one(Printing 1 million recordsu2026u2026).
After implementing these points my crystal reports performance improved drastically. The report that was taking 24 minute to come back now taking only 2 minutes.
However I want my report to come back with one minute. It returns if I remove the sub reports for Time Based Grouping but I can not do so.
My questions here are,
-Can I stop Subreport from fetching the data from DB if itu2019s suppressed?
-I believe using Conditional Template Object is a better option rather than having multiple detailed sections to print the data for a selected Group. However any suggestion here to improve the performance will be appreciable.
-since crystal report does not provide any option to limit the number of records to be fetched from DB, I am forced to use command object with rownum in where condition.
Please let me know about other option(s) to get this done...If there is any.
I am using Crystal report 2008.And we have developed our application the use JRC to export crystal report in PDF.
Regards,
Amrita
Edited by: Amrita Singh on May 12, 2009 11:36 AM

1) I have to design a crystal report with best possible optimization. Optimization is main concern since report will run against 1-2 million data set. Though I am using parameter to fetch only the required data, required data can go till 1 million records.
2) Based on the input passed by the user I have to group the data in report. And for each selected parameter the Detail section I am printing is different. For example:-If user selects store then detail section is different and if user select Host then detail section will be different.
3) Report can be grouped by Time Field also. So to full fill this requirement I would have to create a sub report since other parameters are of string type and can be used in one formula to get parameter based grouping in report. However If I try to return Time filed from the same formula I get the errors the "Return type should be of String typeu201D. This forces me to create sub report for Time based grouping. If user selects Time Field to be grouped on, all the information in the main report gets suppressed and only the sub report gets printed.
If user select store, Host and User in parameter to be grouped on, sub report gets suppressed.
Now with the above mentioned points I tried to optimize the report in following way.
1) Printing 1 million records in the report does not make sense; hence we wanted to show the summary of all the records in chart section but wanted to print just 5000 records in detailed section. Suppressing detailed section after 5000 records does not help much since suppressing just saves the time in printing and does not limit the number of records to be fetched from the DB.I have a subreport also so it fetches the data 2 times from the DB hence makes the performance of the report worse.
To solve this problem I used command object and put the charts in the subreport and detail in main report.
In main report's Command Object I limited the number to records to be fetched from the DB to 5000 using rownum<5000 but in subreport's Command Object I did not set any limit in the query but I am doing all my aggregation in SQL which means do summary operation in DB and get only summarized data from DB.
2)To solve section problem I am using Template object (new feature added in CR 2008).In which I am returning the field based on the "Group By" parameter selected by user.
Edited by: Amrita Singh on May 12, 2009 12:26 PM

Performance tunning in oracle

Hi friends,
I am himansu, i am facing a problem during performance tunning of query in oracle , please guide me how to tune a query which will give better performance.

907977 wrote:
Hi friends,
I am himansu, i am facing a problem during performance tunning of query in oracle , please guide me how to tune a query which will give better performance.Welcome to OTN
Please post your thread at SQL, PL/SQL. PL/SQL
and provide your sql query.
Hope this will help you.

Performance Tunning in report

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