Y can't we follow performance tuning

Normally we r using performance tuning steps after developing our coding for improving the performance of our objects .But y can't we follow the performance tuning steps before developing our object.b'coz alredy we know these steps.

Hi
You can keep the points which you generally look for performance optimization while coding.
This will result in an efficient and optimized code. Once you know how to write optimized code, your program in be perfect.
check this contribution by Andreas Blumenthal...
<a href="
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/4fbafc9e-0e01-0010-dea9-9d23d1b269fb ">https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/4fbafc9e-0e01-0010-dea9-9d23d1b269fb</a>
Regards,
Raj

Similar Messages

Idoc views updation, Workflow, Performance tuning techniques!

Hello,
Greetings for the Day!
Currently my client is facing following issues and they seek an help/attention to these issues. Following is the current landscape of an client.
Sector – Mining
SAP NW MDM 7.1 SP 09
SAP ECC EHP 5
SAP PI 7.0
List of Issues:
Classification (CLFMAS idoc) and Quality (MATQM idoc) views tries to update before MATMAS idoc updates and creates the material in ECC table.
At workflow level, how to assign incoming record approval request, put them in mask like functionality and approve them as bulk records.
Performance tuning techniques.
Issue description:
Classification (CLFMAS idoc) and Quality (MATQM idoc) views tries to update before MATMAS idoc updates and creates the material in a table.
Currently, client’s MATMAS idoc updates Basic data1 and Basic data2 along with other views and material gets updated in ECC table, but whenever record has classification and quality view to update via CLFMAS and MATQM idoc, these 2 idocs tries to search the material ECC table before respective MATMAS to update the table. As it does not have the basic data created for the material entire idoc fails. Kindly suggest the solution as in how we can align the process where classification and quality view will get update only after the basic data views gets updated to material master. Is there any way we can make views to be updated sequentially?
At workflow level, how to assign incoming record approval request, put them in mask like functionality and approve them as bulk records.
Currently, super users are configured within the system, they have 2 roles assigned to their ID’s, 1.custodian and 2.steward. In custodian role user assigns the MDM material number and check other relevant assignment to record creation request, user approves the material request and the request goes to steward role. As the 1 user has 2 roles, same user need not to checks everything again in steward role, hence user wants whatever request comes at steward user inbox, he shall be able to create one single group for those 20-30 records and on one single click entire materials shall be approved and disappear out of his workflow level. Is there any way by which it can be achieved.
Performance tuning techniques.
Currently, client MDM system response time is very very slow, after a single click of action it takes long time to reflect the action within MDM. Material database is almost around 2.5 lakh records, standard structure has been used, not a complex landscape structure. Both ECC and MDM server is on single hardware, only the logical separate DB. Kindly suggest performance techniques if any.
Kindly suggest !
Regards,
Neil

Hi Niel,
Kindly try the below options
-> Performance tuning techniques.
SAP Recommendation is to put the application ,server and Database in different Boxes . I am not sure how you managed to install both MDM and ECC in the same box but that is a big NO NO .
Make sure there is enough hardware support for a separate MDM box.
-> Classification (CLFMAS idoc) and Quality (MATQM idoc) views tries to update before MATMAS idoc updates and creates the material in a table.
MDM only sends out an XML file , so you definitely need a middle ware (PI) to do the conversion.
You can use PI logic ( ccBPM) to sent the IDOC is the necessary sequence .
Else you can maintain this logic in the Processing code of ECC system .
PS : The PI option is more recommended.
Regards,
Vag VIgnesh Shenoy

Steps for performance Tuning....!!!!

Hi all,
I need your help in Performance tuning.
While we do tuning in Oracle, apart from Indexes, where clause and order by clause, what are the other points we need to check. I mean explain plan etc...
I am working as Informatica Developer, but i need to make an documents which points out what are the step we can check while doing performance tuning on SQL queries.
Thanks in advance for your help.

Hi,
have a look into these link.it may helpful to you.
When your query takes too long .
When your query takes too long ...
* HOW TO Post a SQL statement tuning request template posting *
HOW TO: Post a SQL statement tuning request - template posting
Edited by: Ravi291283 on Jul 28, 2009 4:00 AM
Edited by: Ravi291283 on Jul 28, 2009 4:01 AM
Edited by: Ravi291283 on Jul 28, 2009 4:02 AM

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

Oracle Memory Issue/ performance tuning

I have Oracle 9i running on Window 2003 server. 2 GB memory is allocated to Oralce DB( even though server has 14GB memory)
Recently, the oracle process has been slow.. running query
I ran the window task manager. Here is the numbers that I see
Mem usage: 556660k
page Faults: 1075029451
VM size: 1174544 K
I am not sure how to analyze this data. why the page fault is so huge. and Mem usage is half of VM size?
How can I do the performance tuning on this box?

I'm having a similar issue with Oracle 10g R2 64-bit on Windows 2003 x64. Performance on complicated queries is abysmal because [I think] most of the SGA is sitting in a page file, even though there is plenty of physical RAM to be had. Performance on simple queries is probably bad also, but it's not really noticable. Anyway, page faults skyrocket when I hit the "go" button on big queries. Our legacy system runs our test queries in about 5 minutes, but the new system takes at least 30 if not 60. The new system has 24 gigs of RAM, but at this point, I'm only allocating 1 gig to the SGA and 1/2 gig to the PGA. Windows reports oracle.exe has 418,000K in RAM and 1,282,000K in the page file (I rounded a bit). When I had the PGA set to 10 gigs, the page usage jumped to over 8 gigs.
I tried adding ORA_LPENABLE=1 to the registry, but this issue seems to be independent. Interestingly, the amount of RAM taken by oracle.exe goes down a bit (to around 150,000K) when I do this. I also added "everyone" to the security area "lock pages in memory", but again, this is probably unrelated.
I did an OS datafile copy and cloned the database to a 32-bit windows machine (I had to invalidate and recompile all objects to get this to work), and this 32-bit test machine now has the same problem.
Any ideas?

Can anyone plz tell me the steps for performance tuning.

hello friends
what is performance tuning?
can anyone plz tell me the steps for performance tuning.

Hi Kishore, this will help u.
Following are the different tools provided by SAP for performance analysis of an ABAP object
Run time analysis transaction SE30
This transaction gives all the analysis of an ABAP program with respect to the database and the non-database processing.
SQL Trace transaction ST05
The trace list has many lines that are not related to the SELECT statement in the ABAP program. This is because the execution of any ABAP program requires additional administrative SQL calls. To restrict the list output, use the filter introducing the trace list.
The trace list contains different SQL statements simultaneously related to the one SELECT statement in the ABAP program. This is because the R/3 Database Interface - a sophisticated component of the R/3 Application Server - maps every Open SQL statement to one or a series of physical database calls and brings it to execution. This mapping, crucial to R/3s performance, depends on the particular call and database system. For example, the SELECT-ENDSELECT loop on the SPFLI table in our test program is mapped to a sequence PREPARE-OPEN-FETCH of physical calls in an Oracle environment.
The WHERE clause in the trace list's SQL statement is different from the WHERE clause in the ABAP statement. This is because in an R/3 system, a client is a self-contained unit with separate master records and its own set of table data (in commercial, organizational, and technical terms). With ABAP, every Open SQL statement automatically executes within the correct client environment. For this reason, a condition with the actual client code is added to every WHERE clause if a client field is a component of the searched table.
To see a statement's execution plan, just position the cursor on the PREPARE statement and choose Explain SQL. A detailed explanation of the execution plan depends on the database system in use.
Need for performance tuning
In this world of SAP programming, ABAP is the universal language. In most of the projects, the focus is on getting a team of ABAP programmers as soon as possible, handing over the technical specifications to them and asking them to churn out the ABAP programs within the given deadlines.
Often due to this pressure of schedules and deliveries, the main focus of making a efficient program takes a back seat. An efficient ABAP program is one which delivers the required output to the user in a finite time as per the complexity of the program, rather than hearing the comment I put the program to run, have my lunch and come back to check the results.
Leaving aside the hyperbole, a performance optimized ABAP program saves the time of the end user, thus increasing the productivity of the user, and in turn keeping the user and the management happy.
This tutorial focuses on presenting various performance tuning tips and tricks to make the ABAP programs efficient in doing their work. This tutorial also assumes that the reader is well versed in all the concepts and syntax of ABAP programming.
Use of selection criteria
Instead of selecting all the data and doing the processing during the selection, it is advisable to restrict the data to the selection criteria itself, rather than filtering it out using the ABAP code.
Not recommended
Select * from zflight.
Check : zflight-airln = LF and zflight-fligh = BW222.
Endselect.
Recommended
Select * from zflight where airln = LF and fligh = 222.
Endselect.
One more point to be noted here is of the select *. Often this is a lazy coding practice. When a programmer gives select * even if one or two fields are to be selected, this can significantly slow the program and put unnecessary load on the entire system. When the application server sends this request to the database server, and the database server has to pass on the entire structure for each row back to the application server. This consumes both CPU and networking resources, especially for large structures.
Thus it is advisable to select only those fields that are needed, so that the database server passes only a small amount of data back.
Also it is advisable to avoid selecting the data fields into local variables as this also puts unnecessary load on the server. Instead attempt must be made to select the fields into an internal table.
Use of aggregate functions
Use the already provided aggregate functions, instead of finding out the minimum/maximum values using ABAP code.
Not recommended
Maxnu = 0.
Select * from zflight where airln = LF and cntry = IN.
Check zflight-fligh > maxnu.
Maxnu = zflight-fligh.
Endselect.
Recommended
Select max( fligh ) from zflight into maxnu where airln = LF and cntry = IN.
The other aggregate functions that can be used are min (to find the minimum value), avg (to find the average of a Data interval), sum (to add up a data interval) and count (counting the lines in a data selection).
Use of Views instead of base tables
Many times ABAP programmers deal with base tables and nested selects. Instead it is always advisable to see whether there is any view provided by SAP on those base tables, so that the data can be filtered out directly, rather than specially coding for it.
Not recommended
Select * from zcntry where cntry like IN%.
Select single * from zflight where cntry = zcntry-cntry and airln = LF.
Endselect.
Recommended
Select * from zcnfl where cntry like IN% and airln = LF.
Endselect.
Check this links
http://www.sapdevelopment.co.uk/perform/performhome.htm
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/afbad390-0201-0010-daa4-9ef0168d41b6
kindly reward if found helpful.
cheers,
Hema.

Can anyone send tutor for performance tuning?

can anyone send tutor for performance tuning?I like to chk my coding.

1.      Unused/Dead code
Avoid leaving unused code in the program. Either comment out or delete the unused situation. Use program --> check --> extended program to check for the variables, which are not used statically.
2.      Subroutine Usage
For good modularization, the decision of whether or not to execute a subroutine should be made before the subroutine is called. For example:
This is better:
IF f1 NE 0.
PERFORM sub1.
ENDIF.
FORM sub1.
ENDFORM.
Than this:
PERFORM sub1.
FORM sub1.
IF f1 NE 0.
ENDIF.
ENDFORM.
3.      Usage of IF statements
When coding IF tests, nest the testing conditions so that the outer conditions are those which are most likely to fail. For logical expressions with AND , place the mostly likely false first and for the OR, place the mostly likely true first.
Example - nested IF's:
IF (least likely to be true).
    IF (less likely to be true).
     IF (most likely to be true).
     ENDIF.
    ENDIF.
   ENDIF.
Example - IF...ELSEIF...ENDIF :
IF (most likely to be true).
ELSEIF (less likely to be true).
ELSEIF (least likely to be true).
ENDIF.
Example - AND:
   IF (least likely to be true) AND
      (most likely to be true).
   ENDIF.
Example - OR:
        IF (most likely to be true) OR
      (least likely to be true).
4.      CASE vs. nested Ifs
When testing fields "equal to" something, one can use either the nested IF or the CASE statement. The CASE is better for two reasons. It is easier to read and after about five nested IFs the performance of the CASE is more efficient.
5.      MOVE statements
When records a and b have the exact same structure, it is more efficient to MOVE a TO b than to MOVE-CORRESPONDING a TO b.
MOVE BSEG TO *BSEG.
is better than
MOVE-CORRESPONDING BSEG TO *BSEG.
6.      SELECT and SELECT SINGLE
When using the SELECT statement, study the key and always provide as much of the left-most part of the key as possible. If the entire key can be qualified, code a SELECT SINGLE not just a SELECT.   If you are only interested in the first row or there is only one row to be returned, using SELECT SINGLE can increase performance by up to three times.
7.      Small internal tables vs. complete internal tables
In general it is better to minimize the number of fields declared in an internal table. While it may be convenient to declare an internal table using the LIKE command, in most cases, programs will not use all fields in the SAP standard table.
For example:
Instead of this:
data: t_mara like mara occurs 0 with header line.
Use this:
data: begin of t_mara occurs 0,
        matnr like mara-matnr,
        end of t_mara.
8.      Row-level processing and SELECT SINGLE
Similar to the processing of a SELECT-ENDSELECT loop, when calling multiple SELECT-SINGLE commands on a non-buffered table (check Data Dictionary -> Technical Info), you should do the following to improve performance:
o       Use the SELECT into <itab> to buffer the necessary rows in an internal table, then
o       sort the rows by the key fields, then
o       use a READ TABLE WITH KEY ... BINARY SEARCH in place of the SELECT SINGLE command. Note that this only make sense when the table you are buffering is not too large (this decision must be made on a case by case basis).
9.      READing single records of internal tables
When reading a single record in an internal table, the READ TABLE WITH KEY is not a direct READ. This means that if the data is not sorted according to the key, the system must sequentially read the table.   Therefore, you should:
o       SORT the table
o       use READ TABLE WITH KEY BINARY SEARCH for better performance.
10. SORTing internal tables
When SORTing internal tables, specify the fields to SORTed.
SORT ITAB BY FLD1 FLD2.
is more efficient than
SORT ITAB.
11. Number of entries in an internal table
To find out how many entries are in an internal table use DESCRIBE.
DESCRIBE TABLE ITAB LINES CNTLNS.
is more efficient than
LOOP AT ITAB.
CNTLNS = CNTLNS + 1.
ENDLOOP.
12. Performance diagnosis
To diagnose performance problems, it is recommended to use the SAP transaction SE30, ABAP/4 Runtime Analysis. The utility allows statistical analysis of transactions and programs.
13. Nested SELECTs versus table views
Since releASE 4.0, OPEN SQL allows both inner and outer table joins. A nested SELECT loop may be used to accomplish the same concept. However, the performance of nested SELECT loops is very poor in comparison to a join. Hence, to improve performance by a factor of 25x and reduce network load, you should either create a view in the data dictionary then use this view to select data, or code the select using a join.
14. If nested SELECTs must be used
As mentioned previously, performance can be dramatically improved by using views instead of nested SELECTs, however, if this is not possible, then the following example of using an internal table in a nested SELECT can also improve performance by a factor of 5x:
Use this:
form select_good.
data: t_vbak like vbak occurs 0 with header line.
data: t_vbap like vbap occurs 0 with header line.
select * from vbak into table t_vbak up to 200 rows.
select * from vbap
          for all entries in t_vbak
          where vbeln = t_vbak-vbeln.
endselect.
endform.
Instead of this:
form select_bad.
select * from vbak up to 200 rows.
select * from vbap where vbeln = vbak-vbeln.
endselect.
endselect.
endform.
Although using "SELECT...FOR ALL ENTRIES IN..." is generally very fast, you should be aware of the three pitfalls of using it:
Firstly, SAP automatically removes any duplicates from the rest of the retrieved records. Therefore, if you wish to ensure that no qualifying records are discarded, the field list of the inner SELECT must be designed to ensure the retrieved records will contain no duplicates (normally, this would mean including in the list of retrieved fields all of those fields that comprise that table's primary key).
Secondly, if you were able to code "SELECT ... FROM <database table> FOR ALL ENTRIES IN TABLE <itab>" and the internal table <itab> is empty, then all rows from <database table> will be retrieved.
Thirdly, if the internal table supplying the selection criteria (i.e. internal table <itab> in the example "...FOR ALL ENTRIES IN TABLE <itab> ") contains a large number of entries, performance degradation may occur.
15. SELECT * versus SELECTing individual fields
In general, use a SELECT statement specifying a list of fields instead of a SELECT * to reduce network traffic and improve performance. For tables with only a few fields the improvements may be minor, but many SAP tables contain more than 50 fields when the program needs only a few. In the latter case, the performace gains can be substantial. For example:
Use:
select vbeln auart vbtyp from table vbak
into (vbak-vbeln, vbak-auart, vbak-vbtyp)
where ...
Instead of using:
select * from vbak where ...
16. Avoid unnecessary statements
There are a few cases where one command is better than two. For example:
Use:
append <tab_wa> to <tab>.
Instead of:
<tab> = <tab_wa>.
append <tab> (modify <tab>).
And also, use:
if not <tab>[] is initial.
Instead of:
describe table <tab> lines <line_counter>.
if <line_counter> > 0.
17. Copying or appending internal tables
Use this:
<tab2>[] = <tab1>[]. (if <tab2> is empty)
Instead of this:
loop at <tab1>.
append <tab1> to <tab2>.
endloop.
However, if <tab2> is not empty and should not be overwritten, then use:
append lines of <tab1> [from index1] [to index2] to <tab2>.
P.S : Please reward if you find this useful..

Performance tuning SELECTs: Can I force a TRUE db read every time?

Good day everyone!
I've been programming in ABAP for almost 6 years now, and I'd like to begin learning more about performance tuning with respect to database performance.
More specifically, I'm testing some things in a particular SELECT in a report program we have that is timing out in the foreground because of the SELECT. When I first run the program, the SELECT goes against the database, as we all know. Subsequent runs, however, use the buffered data, so the response is a lot quicker and doesn't really reflect that first, initial database read.
Am I correct in assuming that I should be testing my various approaches and collecting performance runtimes against that initial, "true" database read? If that's the case, is there any way I can force the system to actually read the database instead of the buffered data? For those experienced with this kind of performance analysis and tuning, what's the best approach for someone very new to this area such as myself?
Thank you,
Dave

Hi Dave and Rob,
Just my two cents (and yes, I know this is already answered, but..).
I think you might be confusing 2 things: one is SAP buffering, and another one is caching at other levels (database, operating system, etc).
From what I understood Rob was talking mainly about SAP buffering. In that context it is true that if there is a first execution that loads the buffers (for example, some not so small fully buffered tables) then that is an atypical execution, and should be discarded. In real life you will never have execution times like those, except maybe on the very first execution on a monday morning.
Another thing is database caching. If you execute a report twice with exactly the same parameters then you might not be actually making physical reads in the second execution. This second execution will be very fast, but that will not be simulating real life: no user wants a report to be fast the second time you execute it with exactly the same parameters.
To avoid this in Oracle you can empty the so-called SGA, but that is not so useful and it will probably not get you closer to what happens in the real life.
So what to do? In doubt, measure it several times, with different parameters, and probably exclude the extreme values.
Regards,
Rui Dantas

Can anybody recommend useful performance and tuning books. I plan to take the 12c perf tune beta on March 21st

Can anybody recommend any useful performance and tuning books.
I should probably limit my search to 11g or higher.
I am starting to prep for the 12c perf and tuning beta I have scheduled on March 21st.
Thanks Roger

Hi,
I will review your review.
I do see this Oracle 12c book at Amazon written over a year ago.
Its not a certificaiton book.
I also did take the course at Oracle for 11g performance and tuning.
Amazon book:
Oracle Database 12c Performance Tuning Recipes: A Problem solving approach.
Thanks Roger

Can Anybody Send Me The Latest Testking Pdf Of 1z0-033 (Performance Tuning

Hello,
Can Anybody Send Me The Latest Testking Pdf Of 1z0-033 (Performance Tuning
my email address is asiforacle [email protected]
Regards,
Asif Iqbal
Software Engineer. ( Karachi, Pakistan ).

The answer is surely NO but what I would like to ask for the sake of curiosity , why did you ask about Performance Tuning questions over Sql /Plsql forum , not on Database General Forum? Not that you should go there now and ask, just curious.
Tell you what, read the free book(yup free). Here it is,
http://download.oracle.com/docs/cd/B10501_01/server.920/a96533.pdf
You won't need anything else to read, not even that testking stuff too.
HTH
Aman....

Can anyone give me the latest 1z0-033 ( performance tuning ) testking

can anyone give me the latest 1z0-033 ( performance tuning ) testking.
send me at [email protected]
Asif Iqbal.
Software Engineer ( Karachi, Pakistan ).

Asif Iqbal wrote:
can anyone give me the latest 1z0-033 ( performance tuning ) testking.
send me at [email protected]
Asif Iqbal.
Software Engineer ( Karachi, Pakistan ).Well, I hope you do know this that using these kinds of cheat sheets is actually not a very good way of preparing for the exam. If you have some doubts about the topic, bring it here and we can help.
PS: Its not a good idea to post your mail id over a public forum like this.
HTH
Aman....

Can i use "Oracle Database 12c: Performance Management and Tuning " training for getting certification on "Oracle Database 11g: Performance Tuning 1Z0-054"

i have taken "Oracle Database 12c: Performance Management and Tuning new" training from oracle university. Now i would like to get certified on "Oracle Database 11g: Performance Tuning 1Z0-054" exam. Is it possible ?

I essentially endorse and refer you to Matthews' and John's post above.
I would differ with slightly with Matthew because my guess is you would often be able to use like for like 12c training for an 11g certification ( I believe there are precedents). BEFORE ANYONE ASKS THE OTHER WAY DOESN'T HAPPEN.
.... but totally concur with Matthew you would ill advised to procede on that basis without one of:
- This being advertised as possible on the website : e.g. https://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=654&get_params=p_id:169 ... option 2 show courses.
- Confirmation from Brandye
- Confirmation from an Oracle Certification Support Web Ticket ( http://education.oracle.com/pls/eval-eddap-dcd/OU_SUPPORT_OCP.home?p_source=OCP )
... The more common (and in my opinion usually better) way would be get your 11g DBA OCP ( or higher first) and then take the 1z0-054. I am almost certain they will accept your 12c course for the 11g DBA OCP.
If you are choosing the route of not being a 11g (or 12c ) DBA OCP first but are on option 2 and relying on the course for certification then the issue is more in the balance and you are even more strongly advised to get confirmation before proceding (remember if the rules need to be changed for you only then any profit out of the exam is lost).
In general my understanding is Oracle would prefer to encourage people to train on the latest version of product that is available for training and will prefer to avoid restrictions which would cause you to train at a lower version. ( This is simply my guess at Oracle University Policy ... personal opinion only).
Having said all I have said I'd encourage you to go with the advice of the earlier two posts.

Can We Have a Perfomance Tuning Forum?

Justin,
There are forums for Upgrade, Installation, Backup/Recovery & RMAN.But there is none for performance tuning. All the questions about the reports ie Statspack/AWR, Sql queries, they are pushed in the Database General forum only. With heavy volume of generic questions coming there, these threads bury inside them. I have been asked couple of times by several people/friends that why there is not any dedicated OTN forum for Performance Tuning? So if community and you think its a good thing to do, can we have a dedicated DB Performance Tuning forum too?
Regards
Aman....

Aman,
SQL queries tunning is not same as database tunning. Furthermore, most of the SQL queries tunning question go into SQL & PL/SQL forums.
Moreover, more you have forums, more difficult is to find active knowledge people in every single forum. We cannot track many forums as well as few of them depending of your interest.
See, few months ago, the Upgrade forum has been created, and since, only 153 posts there, it is not very used. Why ?
It has been discuss many times over here, have a dedicated forum by features/interest, or have a big one.
I don't find really strange db tunning question in the database general forum. I think even the upgrade question there have their place in that forum.
If any new forum is created, the knowledge people have to follow to maintain that forum popular, which is not sure at all. Whether we are agreed to spend our time over the forums, that'll become very complicated to be active in more than 3 or 4 forums even if there is interest.
See, OTN has upgraded the forum software for a better service, I don't think it has been reach. So, let's keep it simple.
Nicolas.

[ADF-11.1.2] Proof of view performance tuning in oracle adf

Hello,
Take an example of : http://www.gebs.ro/blog/oracle/adf-view-object-performance-tuning-analysis/
It tells me perfectly how to tune VO to achieve performance, but how to see it working ?
For example: I Set Fetch size of 25, 'in Batch of' set to 1 or 26 I see following SQL Statement in Log
[1028] SELECT Company.COMPANY_ID, Company.CREATED_DATE, Company.CREATED_BY, Company.LAST_MODIFY_DATE, Company.LAST_MODIFY_BY, Company.NAME FROM COMPANY Companyas if it is fetching all the records from table at a time no matter what's the size of Batch. If I am seeing 50 records on UI at a time, then I would expect at least 2 SELECT statement fetching 26 records by each statement if I set Batch Size to 26... OR at least 50 SELECT statement for Batch size set to '1'.
Please tell me how to see view performance tuning working ? How one can say that setting batch size = '1' is bad for performance?

Anandsagar,
why don't you just read up on http://download.oracle.com/docs/cd/E21764_01/core.1111/e10108/adf.htm#CIHHGADG
there are more factors influencing performance than just query. Btw, indexing your queries also helps to tune performance
Frank

Performance Tuning in CRM

Hi All,
Can any one help me to important OSS Notes in CRM performance tuning, CRMIC webclient performance, web client channel performance.
Thanks & Regards,
Sandeep

Hi Sandeep,
Please take a look at the following SAP NOTES for performance tuning in CRM 2007 Webclient:
Note 1048388 - General Performance improvements of BSP transactions
Note 1228076 - CRM Web UI: Frontend performance DDLB and input changes
Note 1246144 - Advanced Search right side hidden when resolution: 1024X768
Note 1242599 - IE7: Message # shines through the "More" dropbox
Note 1240769 - Native DDLB value not set when its disabled
Note 1237437 - Config Mode: FireFox support and Visual enhancements
Note 1230443 - Scrollbar missing or not showing up on some CRM views
Best Regards,
Gabriel

Y can't we follow performance tuning

Similar Messages

Maybe you are looking for