Need suggestion on Performance tuning

Hi,
We have a container with the single document which is of size 3 MB around. This document contains some master data, it will be used across the application.
we have implemented transactions for the whole application recently,so that we could avoid the db locks now. But, it resulted in some performance overhead especially for this single document container.
For example, we have a scenario to display all the records from the document on the screen at a time. That time it is taking too much time when compared to earlier to the transactions implementations.And we will be using (read operation) this container data very freequently (most of the pages) as it is master data.
Please let me know, is there any approach/solution for the above case particularly to boost the performance on the container?
Thanks,
Balakrishna.

Thank you for the response.
Here 'display all records' mean read operation on the document. We perform read operations very frequently.
We do have write operations to update the document in between read operations.
Also the index has been done for frequently used nodes in the document.
Hope the above information gives you more details. Please let me know if you need any information.
Thanks,
Balakrishna.

Similar Messages

Need help in Performance tuning for function...

Hi all,
I am using the below algorithm for calculating the Luhn Alogorithm to calculate the 15th luhn digit for an IMEI (Phone Sim Card).
But the below function is taking about 6 min for 5 million records. I had 170 million records in a table want to calculate the luhn digit for all of them which might take up to 4-5 hours.Please help me performance tuning (better way or better logic for luhn calculation) to the below function.
A wikipedia link is provided for the luhn algorithm below
Create or Replace FUNCTION AddLuhnToIMEI (LuhnPrimitive VARCHAR2)
      RETURN VARCHAR2
   AS
      Index_no     NUMBER (2) := LENGTH (LuhnPrimitive);
      Multiplier   NUMBER (1) := 2;
      Total_Sum    NUMBER (4) := 0;
      Plus         NUMBER (2);
      ReturnLuhn   VARCHAR2 (25);
   BEGIN
      WHILE Index_no >= 1
      LOOP
         Plus       := Multiplier * (TO_NUMBER (SUBSTR (LuhnPrimitive, Index_no, 1)));
         Multiplier := (3 - Multiplier);
         Total_Sum := Total_Sum + TO_NUMBER (TRUNC ( (Plus / 10))) + MOD (Plus, 10);
         Index_no   := Index_no - 1;
      END LOOP;
      ReturnLuhn := LuhnPrimitive || CASE
                                         WHEN MOD (Total_Sum, 10) = 0 THEN '0'
                                         ELSE TO_CHAR (10 - MOD (Total_Sum, 10))
                                     END;
      RETURN ReturnLuhn;
   EXCEPTION
      WHEN OTHERS
      THEN
         RETURN (LuhnPrimitive);
   END AddLuhnToIMEI;
http://en.wikipedia.org/wiki/Luhn_algorithmAny sort of help is much appreciated....
Thanks
Rede

There is a not needed to_number function in it. TRUNC will already return a number.
Also the MOD function can be avoided at some steps. Since multiplying by 2 will never be higher then 18 you can speed up the calculation with this.
create or replace
FUNCTION AddLuhnToIMEI_fast (LuhnPrimitive VARCHAR2)
      RETURN VARCHAR2
   AS
      Index_no     pls_Integer;
      Multiplier   pls_Integer := 2;
      Total_Sum    pls_Integer := 0;
      Plus         pls_Integer;
      rest         pls_integer;
      ReturnLuhn   VARCHAR2 (25);
   BEGIN
      for Index_no in reverse 1..LENGTH (LuhnPrimitive) LOOP
         Plus       := Multiplier * TO_NUMBER (SUBSTR (LuhnPrimitive, Index_no, 1));
         Multiplier := 3 - Multiplier;
         if Plus < 10 then
            Total_Sum := Total_Sum + Plus ;
         else
            Total_Sum := Total_Sum + Plus - 9;
         end if;
      END LOOP;
      rest := MOD (Total_Sum, 10);
      ReturnLuhn := LuhnPrimitive || CASE WHEN rest = 0 THEN '0' ELSE TO_CHAR (10 - rest) END;
      RETURN ReturnLuhn;
   END AddLuhnToIMEI_fast;
/My tests gave an improvement for about 40%.
The next step to try could be to use native complilation on this function. This can give an additional big boost.
Edited by: Sven W. on Mar 9, 2011 8:11 PM

Need help/suggestion in performance tuning

hi,
I have the following
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call     count       cpu    elapsed       disk      query    current        rows
Parse      460   4700.00    5239.96          2          6          0           0
Execute 6234640362100.0040673190.99 102043906 110604822     123086       49656
Fetch    150442561100.0011454381.51     515184   13365552          0       92801
total    7785042927900.00 9183139.50 102559092 123970380     123086      142457
Misses in library cache during parse: 27
Misses in library cache during execute: 14
   40 user SQL statements in session.
585 internal SQL statements in session.
625 SQL statements in session.
   10 statements EXPLAINed in this session.Can some one suggest how to check

Aman.... wrote:
What do you want us to say about it since it's a summary of the session's trace file? Do you have any particular query which you think is not performing well?
It's a summary that records an elapsed time of 9.1 million seconds - that's about 106 days - which is quite a long time for a single session running 40 end-user statements.
Regards
Jonathan Lewis

Need Suggestion on performance of Popups

i have some performance issue on Popups display.
presently using "dhtmlmodal.open" to display a popup, this is time consuming to display the popup and the page contents.
is there any other alternative within JSF1.1 without using 3rd party library or components.
i know Richfaces, IBM, icefaces provides some Rich components, but my requirement is not to use them.
i need a solution within the JSF1.1 spec.
any Suggestion on this is great for me and very thankful.
thanks in advance.
regards,
Pravin

Get it to work using plain HTML/Javascript. Once you got that to work, wrap it in a custom JSF component.

Need help in Performance tuning

Hi All,
        I am facing some performance issues in my program. The program taking a hell lot of time to execute and some times timing out without giving the out put. This is a report program with ALV output. It is handling mainly Sales related data.
       The program is fetching a huge volume of data from different tables and processing this bulk data inside the loops several times. In most of the queries I am unable to supply all key fields, because my requirement is like that only. I have many places in my program i am using inner loop and function modules inside loop etc.
        Any pointers on this will be a great help.
Regards,
Jijeesh P G

1) Make sure that any READ or LOOP inside an outer LOOP accesses the inner table with an appropriate key (either using BINARY search when reading a standard table or using sorted/hashed tables for inner tables only). This helps in most cases.
2) If the tables witdh is more than aprox. 30 bytes LOOP ASSIGNING <wa> may help a bit. Declare <wa> for each table separately using the tables line type (otherway type casting would cost some additional time).
3) You may use FM SAPGUI_PROGRESS_INDICATOR in the outer loops to inform the user while he is waiting.
4) A COMMIT from time to time will reset the measured time for timeout ( and therefore avoids timeouts - do NOT use without checking step 1) ).
4) The programm may use virtual memory if a huge amount of data is selected ( I have seen dumps in due to the fact that nor more disk space was available). So - if STEPS 1)-3) failed - look a the process for rollling in/out).

Need help with Performance Tuning

Following query takes 8 secs. Any help will be appreciated
SELECT SUM(FuturesMarketVal) FuturesMarketVal
FROM (SELECT CASE WHEN null IS NULL THEN FuturesMarketVal
ELSE DECODE(FUTURES_NAME, null, FuturesMarketVal, 0)
END FuturesMarketVal
FROM (SELECT SUM( (a.FUTURES_ALLOC * (NVL(b.Futures_EOD_Price,0)/100 - NVL(c.Futures_EOD_Price,0)/100) * a.CONTRACT_SIZE) / DECODE(a.CONTRACT_SIZE,100000,1,1000000,4,3000000,12,1) ) FuturesMarketVal,
a.FUTURES_NAME
FROM cms_futures_trans a,
cms_futures_price b,
cms_futures_price c
Where c.history_date (+) = TO_DATE(fas_pas_pkg.get_weekday(to_date('12/30/2005') - 1),'mm/dd/yyyy')
and a.FUTURES_NAME = b.FUTURES_NAME (+)
AND a.trade_date < TO_DATE('12/30/2005','mm/dd/yyyy')
AND b.history_date (+) = TO_DATE('12/30/2005','mm/dd/yyyy')
AND a.FUTURES_NAME = c.FUTURES_NAME (+)
GROUP BY a.FUTURES_NAME
/

Eric:
But there are only 5 records in cms_futures_price and 10 in cms_futures_trans :-)
OP:
I'm not usre what you are trying to fo here, but a couple of comments.
Since NULL IS NULL will always be true, you don;t really need the CASE statement. as it stands, your query will always return FuturesMarketVal. If the results are correct, then you can do without the DECODE as well.
Why are you calling fas_pas_pkg.get_weekday with a constant value? Can you not just use whatever it returns as a constant instead of calling the function?
Are you sure you need all those outer joins? They almost guarantee full scans of the outer joined tables.
Perhaps if you post some representative data from the two tables and an explanation of what you are trying to accomplish someone may have a better idea.
John

Performance tuning for Sales Order and its configuration data extraction

I write here the data fetching subroutine of an extract report.
This report takes 2.5 hours to extract 36000 records in the quality server.
Kindly provide me some suggestions for performance tuning it.
    SELECT auart vkorg vtweg spart vkbur augru
              kunnr yxinsto bstdk vbeln kvgr1 kvgr2 vdatu
              gwldt audat knumv
              FROM vbak
              INTO TABLE it_vbak
              WHERE vbeln IN s_vbeln
              AND erdat IN s_erdat
              AND auart IN s_auart
              AND vkorg = p_vkorg
              AND spart IN s_spart
              AND vkbur IN s_vkbur
              AND vtweg IN s_vtweg.
IF NOT it_vbak[] IS INITIAL.
    SELECT mvgr1 mvgr2 mvgr3 mvgr4 mvgr5
           yyequnr vbeln cuobj
           FROM vbap
           INTO TABLE it_vbap
           FOR ALL ENTRIES IN it_vbak
           WHERE vbeln = it_vbak-vbeln
           AND   posnr = '000010'.
    SELECT bstkd inco1 zterm vbeln
           prsdt
           FROM vbkd
           INTO TABLE it_vbkd
           FOR ALL ENTRIES IN it_vbak
           WHERE vbeln = it_vbak-vbeln.
    SELECT kbetr kschl knumv
           FROM konv
           INTO TABLE it_konv
           FOR ALL ENTRIES IN it_vbak
           WHERE knumv = it_vbak-knumv
           AND   kschl = 'PN00'.
    SELECT vbeln parvw kunnr
           FROM vbpa
           INTO TABLE it_vbpa
           FOR ALL ENTRIES IN it_vbak
           WHERE vbeln = it_vbak-vbeln
           AND parvw IN ('PE', 'YU', 'RE').
ENDIF.
LOOP AT it_vbap INTO wa_vbap.
    IF NOT wa_vbap-cuobj IS INITIAL.
      CALL FUNCTION 'VC_I_GET_CONFIGURATION'
           EXPORTING
                instance            = wa_vbap-cuobj
                language            = sy-langu
           TABLES
                configuration       = it_config
           EXCEPTIONS
                instance_not_found = 1
                internal_error      = 2
                no_class_allocation = 3
                instance_not_valid = 4
                OTHERS              = 5.
      IF sy-subrc = 0.
        READ TABLE it_config WITH KEY atnam = 'IND_PRODUCT_LINES'.
        IF sy-subrc = 0.
          wa_char-obj = wa_vbap-cuobj.
          wa_char-atnam = it_config-atnam.
          wa_char-atwrt = it_config-atwrt.
          APPEND wa_char TO it_char.
          CLEAR wa_char.
        ENDIF.
        READ TABLE it_config WITH KEY atnam = 'IND_GQ'.
        IF sy-subrc = 0.
          wa_char-obj = wa_vbap-cuobj.
          wa_char-atnam = it_config-atnam.
          wa_char-atwrt = it_config-atwrt.
          APPEND wa_char TO it_char.
          CLEAR wa_char.
        ENDIF.
        READ TABLE it_config WITH KEY atnam = 'IND_VKN'.
        IF sy-subrc = 0.
          wa_char-obj = wa_vbap-cuobj.
          wa_char-atnam = it_config-atnam.
          wa_char-atwrt = it_config-atwrt.
          APPEND wa_char TO it_char.
          CLEAR wa_char.
        ENDIF.
        READ TABLE it_config WITH KEY atnam = 'IND_ZE'.
        IF sy-subrc = 0.
          wa_char-obj = wa_vbap-cuobj.
          wa_char-atnam = it_config-atnam.
          wa_char-atwrt = it_config-atwrt.
          APPEND wa_char TO it_char.
          CLEAR wa_char.
        ENDIF.
        READ TABLE it_config WITH KEY atnam = 'IND_HQ'.
        IF sy-subrc = 0.
          wa_char-obj = wa_vbap-cuobj.
          wa_char-atnam = it_config-atnam.
          wa_char-atwrt = it_config-atwrt.
          APPEND wa_char TO it_char.
          CLEAR wa_char.
        ENDIF.
    READ TABLE it_config WITH KEY atnam = 'IND_CALCULATED_INST_HOURS'.
        IF sy-subrc = 0.
          wa_char-obj = wa_vbap-cuobj.
          wa_char-atnam = it_config-atnam.
          wa_char-atwrt = it_config-atwrt.
          APPEND wa_char TO it_char.
          CLEAR wa_char.
        ENDIF.
      ENDIF.
    ENDIF.
ENDLOOP. " End of loop on it_vbap
Edited by: jaya rangwani on May 11, 2010 12:50 PM
Edited by: jaya rangwani on May 11, 2010 12:52 PM

Hello Jaya,
Will provide some point which will increase the performance of the program:
1.     VBAK & VBAP are header & item table. And so the relation will be 1 to many. In this case, you can use inner join instead multiple select statement.
2.     If you are very much confident in handling the inner join, then you can do a single statement to get the data from VBAK, VBAP & VBKD using the inner join.
3.     Before using for all entries, check whether the internal table is not initial.
And sort the internal table and delete adjacent duplicates.
4.     Sort all the resultant internal table based on the required key fields and read always using the binary search.
You will get a number of documents where you can get a fair idea of what should be done and what should not be while doing a program related to performance issue.
Also you can have number of function module and BAPI where you can get the sales order details. You can try with u2018BAPISDORDER_GETDETAILEDLISTu2019.
Regards,
Selva K.

Performance tuning for new OFMW environment

Hello
We have just set up a new UAT environment entirely on all Oracle FMW latest products which includes:
1) OS -RHEL V5
2) WebCenter
3) SOA Suite
4) Database
5) IDM
6) HTTP Server
7) WebLogic Server
As as post infrastructure setup plan we need to to performance tuning as well. Shall we do only WLS performance tuning or we need to tune each and every product in order to get optimum results.
Any guide? resource to help?
Pls advice
Regards
Dev

When you install the product soa-suite (and probably webcenter too) a prerequisite check is performed
that gives information about packages and parameters that need to be adjusted on your operating system.
For products that run on WebLogic Server you probably have to tune the JVM, examples can be found here:
- http://middlewaremagic.com/weblogic/?p=6930 (discusses JRockit)
- http://middlewaremagic.com/weblogic/?p=7083 (focuses on Coherence, but the considerations can be applied to other environments as well)
Examples that set-up the SOA-Suite can be found here:
- http://middlewaremagic.com/weblogic/?p=6040 (discusses considerations when installing the SOA suite)
- http://middlewaremagic.com/weblogic/?p=6872 (discusses considerations when adding the web-tier to the SOA suite)
The enterprise deployment guides can help too:
- SOA Suite: http://download.oracle.com/docs/cd/E21764_01/core.1111/e12036/toc.htm
- WebCenter: http://download.oracle.com/docs/cd/E21764_01/core.1111/e12037/toc.htm
These also contain sections on integration with Oracle Identity Management and the Oracle HTTP Server

Performance Tuning for OBIEE Reports

Hi Experts,
I had a requirement for which i have to end up building a snowflakt model in Physical layer i.e. One Dimension table with Three snowflake tables(Materialized views).
The key point is the Dimension table is used in most of the OOTB reports.
so all the reports use other three snowflakes tables in the Join conditions due to which the reports take longer time than ever like 10 mints.
can anyone suggest good performance tuning tips to tune the reports.
i created some indices on Materialized view columns and and on dimension table columns.
i created the Materialized views with cache Enabled and refreshes only once in 24 hours etc
is there anything i have to improve performance or have to consider re-designing the Physical layer without snowflake
Please Provide valuable suggestions and comments
Thank You
Kumar

Kumar,
Most of the Performance Tuning should be done at the Back End , So calculate all the aggregates in the Repository it self and Create a Fast Refresh for MV and you can also do one thing you can schedule an IBOT to run the report every 1 hour or some thing so that the report data will be cached and when the user runs the report the BI Server extracts the data from Cache
Hope that helps
~Srix

Performance Tuning Guide Needed.

I've seen numerous references to a "Performance Tuning Guide" Is there
any way this document could be posted on the weblogic customer
downloads.
We desperately need this information. Even with working with Support so
far the process has been trial and error. Try this, then try that. I've
burnt many days just playing around with the properties and so far no
luck.
I've read just about every post in the performance newsgroup. Some seem
to be the same types of problems we are currently facing. Great
response when there are about 50 users. Horrible around 65. Slowness
doesn't seem to be gradual. All of a sudden it starts to crawl. So far
I haven't seen any posts regarding solutions (weblogic.properties
settings) which I could try and use.
We are currently using weblogic 4.0.3 on AIX 4.3 with Oracle 8.i. No
native performance pack for that release. Will upgrading to 4.5.1
increase performance dramatically? Our application is very database
dependent. We use a the weblogic connection pool using Oracle's jdbc
thin driver. Note Oracle's OCI driver has numerous bugs related to CLOB
and BLOB retrieval which are used heavily in our database.
Thanks,
Don DeLuca

Hi Don,
I can't comment on the public posting of the Capacity Planning document.
However, I can say that there is no magic formula for optimizing your
WebLogic application. The biggest things to look at are the application
design and code (e.g., unnecessary synchronization code), DBMS configuration
and database design, JVM heap size (bigger is not always better), number of
execute threads (more is not always better), number of database connections
in the pool, whether or not you are using the performance pack, how much
other activity is happening on the server machine, etc. I can tell you that
trying to simulate a large number of clients from a single JVM client (using
lots of threads) will lead you to believe that the server is having problems
when it is really the client software/hardware that is often the limiting
factor. In many of our large benchmarks, we end up using significantly more
hardware for driving the clients than for running the server(s).
Sorry I don't have any better answers for you,
Robert
Don DeLuca wrote:
I've seen numerous references to a "Performance Tuning Guide" Is there
any way this document could be posted on the weblogic customer
downloads.
We desperately need this information. Even with working with Support so
far the process has been trial and error. Try this, then try that. I've
burnt many days just playing around with the properties and so far no
luck.
I've read just about every post in the performance newsgroup. Some seem
to be the same types of problems we are currently facing. Great
response when there are about 50 users. Horrible around 65. Slowness
doesn't seem to be gradual. All of a sudden it starts to crawl. So far
I haven't seen any posts regarding solutions (weblogic.properties
settings) which I could try and use.
We are currently using weblogic 4.0.3 on AIX 4.3 with Oracle 8.i. No
native performance pack for that release. Will upgrading to 4.5.1
increase performance dramatically? Our application is very database
dependent. We use a the weblogic connection pool using Oracle's jdbc
thin driver. Note Oracle's OCI driver has numerous bugs related to CLOB
and BLOB retrieval which are used heavily in our database.
Thanks,
Don DeLuca

IIR 2.8.0.7 performance tuning suggestions / documents for Oracle 11?

Would we have any hints or white papers that would support a customer in IIR matching server tuning for initial load performance,
beyond the Siebel specific
Performance Tuning Guidelines for Siebel CRM Application on Oracle Database (Doc ID 781927.1)
which does NOT generate any statistics on the Informatica Schema?
Customer is starting production data load into Siebel UCM of over 5 million customer records . Their current bottle neck seems to be IIR queries and high IIR host resources usage.
This would be for Siebel 8.1.1.4 [21225] on Oracle 11.1.0.6; I currently do not know if ACR 475 with its EBC access is used or not; I'd be looking for any performance tuning suggestions on the Informatica & database side - I have not found anything helpful in the informatica knowledgebase and in the 2.8.0.7 docs the only performance tuning suggestions seem to be on IDT loads.
Obviously performance can be influenced by the matching fields used, but this customer will be looking for performance tuning suggestions keeping the matching fields and thresholds they got approved from the business side.
Any documents we could share?

Hi Varad,
Well, Oracle Metalink actually got it fixed for me! Got to give them credit.
I ran the 1st bit of SQL they sent me and it fixed it so I think it was only cosmetic. I've enclosed all of their response in case others may find themselves in similar situation.
Thanks again for YOUR help too.
Perry
==========================================================
1. Do you see any invalid objects in the database?
2. Please update the SR with the output of running the commands below
1.Connect as SYS.
set serveroutput on (This will let you see if any check fails)
exec validate_apex; (If your version is 2.0 or above)
If all are fine, the registry should be changed to VALID for APEX and you should see the following
message:
PL/SQL procedure successfully completed.
Note : The procedure validate_apex should always complete successfully.
With serveroutput on, it should show why Application Express is listed as invalid.It should show output like:
FAILED CHECK FOR <<obect_name>>
Or
FAILED EXISTENCE CHECK FOR <<object_name>>

Need ur valuable suggestions on performance in sap BI

Hi All,
Hope every one is doing great. Need ur valuable suggestions on performance in SAP BI.
1. what is meant by DB partitioning, in which scenario we use it and what the steps to do this task.
2. Navigational attributes are use when v want to make use of this attr in reporting with certian actions. My question is do navigational attributes improves the performance if so how and if not what are the draw backs.
3. Multiprovider are use to access the data from different infoprovider to generate the reports.
In what way multiprovider inproves the performance??
4. Number Range buffering when it is used what r the steps has to follow ??
5. what is the procedure to calculate the DB statistics. what are the technical conents v install for this, when we install this befor the development are after completion of the developement and in what way they are helpfull to measure the performance.
Thanks in Advance
KK

1. what is meant by DB partitioning, in which scenario we use it and what the steps to do this task.
http://help.sap.com/saphelp_nw70/helpdata/en/33/dc2038aa3bcd23e10000009b38f8cf/content.htm
2. Navigational attributes are use when v want to make use of this attr in reporting with certian actions. My question is do navigational attributes improves the performance if so how and if not what are the draw backs.
Nav Attribute:-
The dataflow performance/space is affected in the infoobject load, since the sid tables is growing with navigational attributes
The dataflow performance/space is not affected in transactional data (except for the aggregates).
So every navigationa attribute in an infoobject can be added to the infocubes without any cost.
The performance in query is affected, but the solution is simple: do not use!
Please check the following thread:
Re: Navigate Attribute
3. Multiprovider are use to access the data from different infoprovider to generate the reports.
In what way multiprovider inproves the performance??
--THis causes performance degradation as OLAP has to divide the query in many sub-queries.
4. Number Range buffering when it is used what r the steps has to follow ??
5. what is the procedure to calculate the DB statistics. what are the technical conents v install for this, when we install this befor the development are after completion of the developement and in what way they are helpfull to measure the performance.
--For DB Statistics :
Ref : SAP Note No: 588668
http://help.sap.com/saphelp_nw04/helpdata/en/19/f832ac5d4611d4aa1500a0c9430730/content.htm

Performance Tuning - Suggestions

Hi,
I have an ABAP (Interactive List) Program times out in PRD very often. The ABAP run time is about 99%. The DB time is less than 1%. All the select statements has the table index in place. Actually it isprocessing all the Production Orders (Released but not Confirmed/Closed). Please let me know if you have any suggestion.
Appreciate Your Help.
Thanks,
Kannan.

Hi
1) Dont use nested select statements
2) If possible use for all entries in addition
3) In the where addition make sure you give all the primary key
4) Use Index for the selection criteria.
5) You can also use inner joins
6) You can try to put the data from the first select statement into an Itab and then in order to select the data from the second table use for all entries in.
7) Use the runtime analysis SE30 and SQL Trace (ST05) to identify the performance and also to identify where the load is heavy, so that you can change the code accordingly
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/5d0db4c9-0e01-0010-b68f-9b1408d5f234
ABAP performance depends upon various factors and in devicded in three parts:
1. Database
2. ABAP
3. System
Run Any program using SE30 (performance analys) to improve performance refer to tips and trics section of SE30, Always remember that ABAP perfirmance is improved when there is least load on Database.
u can get an interactive grap in SE30 regarding this with a file.
also if u find runtime of parts of codes then use :
Switch on RTA Dynamically within ABAP Code
*To turn runtim analysis on within ABAP code insert the following code
SET RUN TIME ANALYZER ON.
*To turn runtim analysis off within ABAP code insert the following code
SET RUN TIME ANALYZER OFF.
Always check the driver internal tables is not empty, while using FOR ALL ENTRIES
Avoid for all entries in JOINS
Try to avoid joins and use FOR ALL ENTRIES.
Try to restrict the joins to 1 level only ie only for tables
Avoid using Select *.
Avoid having multiple Selects from the same table in the same object.
Try to minimize the number of variables to save memory.
The sequence of fields in 'where clause' must be as per primary/secondary index ( if any)
Avoid creation of index as far as possible
Avoid operators like <>, > , < & like % in where clause conditions
Avoid select/select single statements in loops.
Try to use 'binary search' in READ internal table. Ensure table is sorted before using BINARY SEARCH.
Avoid using aggregate functions (SUM, MAX etc) in selects ( GROUP BY , HAVING,)
Avoid using ORDER BY in selects
Avoid Nested Selects
Avoid Nested Loops of Internal Tables
Try to use FIELD SYMBOLS.
Try to avoid into Corresponding Fields of
Avoid using Select Distinct, Use DELETE ADJACENT
Check the following Links
Re: performance tuning
Re: Performance tuning of program
http://www.sapgenie.com/abap/performance.htm
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
check the below link
http://www.sap-img.com/abap/performance-tuning-for-data-selection-statement.htm
See the following link if it's any help:
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
Check also http://service.sap.com/performance
and
books like
http://www.sap-press.com/product.cfm?account=&product=H951
http://www.sap-press.com/product.cfm?account=&product=H973
http://www.sap-img.com/abap/more-than-100-abap-interview-faqs.htm
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
Performance tuning for Data Selection Statement
http://www.sap-img.com/abap/performance-tuning-for-data-selection-statement.htm
Debugger
http://help.sap.com/saphelp_47x200/helpdata/en/c6/617ca9e68c11d2b2ab080009b43351/content.htm
http://www.cba.nau.edu/haney-j/CIS497/Assignments/Debugging.doc
http://help.sap.com/saphelp_erp2005/helpdata/en/b3/d322540c3beb4ba53795784eebb680/frameset.htm
Run Time Analyser
http://help.sap.com/saphelp_47x200/helpdata/en/c6/617cafe68c11d2b2ab080009b43351/content.htm
SQL trace
http://help.sap.com/saphelp_47x200/helpdata/en/d1/801f7c454211d189710000e8322d00/content.htm
CATT - Computer Aided Testing Too
http://help.sap.com/saphelp_47x200/helpdata/en/b3/410b37233f7c6fe10000009b38f936/frameset.htm
Test Workbench
http://help.sap.com/saphelp_47x200/helpdata/en/a8/157235d0fa8742e10000009b38f889/frameset.htm
Coverage Analyser
http://help.sap.com/saphelp_47x200/helpdata/en/c7/af9a79061a11d4b3d4080009b43351/content.htm
Runtime Monitor
http://help.sap.com/saphelp_47x200/helpdata/en/b5/fa121cc15911d5993d00508b6b8b11/content.htm
Memory Inspector
http://help.sap.com/saphelp_47x200/helpdata/en/a2/e5fc84cc87964cb2c29f584152d74e/content.htm
ECATT - Extended Computer Aided testing tool.
http://help.sap.com/saphelp_47x200/helpdata/en/20/e81c3b84e65e7be10000000a11402f/frameset.htm
Just refer to these links...
performance
Performance
Performance Guide
performance issues...
Performance Tuning
Performance issues
performance tuning
performance tuning
You can go to the transaction SE30 to have the runtime analysis of your program.Also try the transaction SCI , which is SAP Code Inspector.
1 Always check the driver internal tables is not empty, while using FOR ALL ENTRIES
2 Avoid for all entries in JOINS
3 Try to avoid joins and use FOR ALL ENTRIES.
4 Try to restrict the joins to 1 level only ie only for 2 tables
5 Avoid using Select *.
6 Avoid having multiple Selects from the same table in the same object.
7 Try to minimize the number of variables to save memory.
8 The sequence of fields in 'where clause' must be as per primary/secondary index ( if any)
9 Avoid creation of index as far as possible
10 Avoid operators like <>, > , < & like % in where clause conditions
11 Avoid select/select single statements in loops.
12 Try to use 'binary search' in READ internal table. Ensure table is sorted before using BINARY SEARCH.
13 Avoid using aggregate functions (SUM, MAX etc) in selects ( GROUP BY , HAVING,)
14 Avoid using ORDER BY in selects
15 Avoid Nested Selects
16 Avoid Nested Loops of Internal Tables
17 Try to use FIELD SYMBOLS.
18 Try to avoid into Corresponding Fields of
19 Avoid using Select Distinct, Use DELETE ADJACENT.
Regards
Anji

Need suggestions on improving the performance end to end

I referred following links and as many as 25 previous posts before posting this question.
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/10b54994-f569-2a10-ad8f-cf5c68a9447c
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/402fae48-0601-0010-3088-85c46a236f50
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/e0068bc1-6f8c-2a10-52bb-c6ee3562feb2
/people/boris.zarske/blog/2007/06/13/sizing-a-system-for-the-system-landscape-directory-of-sap-netweaver
I have some queries related to improving the performance of a scenario in my landscape.
Scenario : IDOC-SOAP (Synchronous with BPM)
The mapping is simple with 3 fld direct mapping.
Works grt with no problem in normal cases for one message transfer.
But initial load ( when we put it in new system, the scenario generates erros if we send more than 23 IDOCs at a time)
I have decided to perform the following to solve it.
/people/william.li/blog/2008/03/07/step-by-step-guide-in-processing-high-volume-messages-using-pi-71s-message-packaging
Will it help me because its a IDOC sync scenario.
What can I do to improve the performance of this scenario?
Please suggest me good suggestions to improve the performance
Please do list me out points that I have to perform (for a sync scenario with BPM) as I am already confused watching lots of blogs posts.
Nikhil.

do you think that the performance tuning that I mentioned in the link will hold good with sync scenarios?
i dont think so.....in this scenario the async mesg processing is made to wait
from the blog:
As you can see, for the 1st minute, all the messages are waiting to be processed. After 60 seconds,
the packages will be created and processed. There is no change to the monitoring of each of the
individual messages in SXI_MONITOR.
....but if you make a sync scenario wait....then probably you may run into the risk of blocking the Queues.......
If this is going to be in production then i would have been more careful...becoz firstly it is BPM....then synchronous BPM.....then a processing wait......normally do not try to make the BPM processing wait...my small suggestion

Resources for performance tuning and RAC needed

Can you suggest me the best knowledge resources for performance tuning and RAC?
Besides Oracle doc ...
Thanks!

Before all, I'm searching for resources on web like performance tuning from Dizwell Informatics is.
Anyway thank you Eric for your suggestion!

Need suggestion on Performance tuning

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