In sap bi performance tuning option is considered in cube not in ods, why?

details about
indexes,partitions,aggregates,compression,roll up
how these are helping to increase system performance
why ods is not suitable?

Hi,
Generally we do performance tuning on the cubes as most of the reportings are done on the cubes hpowever in case of DSO also we can increase the performance by creating indexes of deactivating SID generation flag if there is no reporting on the DSO.
Following 2 links will show you different aspects of performance tuning :-
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/404544e7-83c9-2e10-7b80-a24d5099ce3f
For LID and High Cardinality
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/005f3197-d3da-2e10-1a94-a5c62342f2aa
You may create aggregates on the cube if some of IO are being used in the query very frequently to enhance the performce of query execution.
Navesh

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Hi All,
Just thought of sharing this info on SDN...
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http://www.erpguides.com/books/bwperformance.htm
Shreekant W Shiralkar & Bharat Patel have authored a book on SAP BW Performance Tuning. The book is based on their real life experiences on improving the system performance using various features/techniques/ideas.
I am aware that the The book covers many how-to procedures with screen shots for helping the reader to implement the performance improvement and benefit immediately. It would be interesting to read this book as a compilation of practical experiences on performance tuning .
Cheers,
Amol

Hi,
Read Data warehousing books written by Ralph Kimball or Bill Inmon in order to familiarize yourself with the basic concepts of data warehousing. This is the foundation of the entire thing.
Follow the SAP training materials on BW Data Warehousing, BW Reporting and BW Modeling. There are several books that can help you a lot when getting started. check this link
[http://www.amazon.com/SAP-BW-Book-List/lm/RRWM7R55RBEXQ/ref=cm_lmt_srch_f_2_rsrsrs2/103-7157721-8001426]
After you have a solid BW knowledge, start to review the help.sap.com site.
Hope this helps,
Regards,
Haritha.

SAP CRM Performance tuning

From where can I get information or documents how to do performance tuning in SAP CRM?

Hi, Performance Tuning a SAP system is unique in every environment, also there are many area's in SAP to tune even area's outside SAP, eg... your Operating System/Network/Client Machines/Virtual Landscape/Cloud.
I recommend that you engage in a performance testing execise which will identify what area of your SAP Landscape needs tuning, first you need to identify the bottleneck before you can tune it.
The way the question was posed is exactly the same as wanting to fix a car but you have no idea which part of the car to fix...
*LoadRunner is an excellent tool to simulate virtual work load on an SAP environment*
Regards
Sodick25
http://www.2createawebsite.co.za
Edited by: Sodick25 on Aug 15, 2011 11:58 AM
Edited by: Sodick25 on Aug 15, 2011 11:59 AM

SAP Netweaver Performance Tuning

Guys,
I am good in SAP J2EE Engine Performance Tuning. I would like to learn SAP ABAP Based Server Performance tuning end to end. Please recommend me some links/docs to start with the performance tuning for different OS like HP-UX/AIX & for Databases : Oracle/MaxDB etc.
Thank you in advance.
Cheers, Karthick

Hi Karthick, for example for SAP with Oracle on AIX -->
white paper -->
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP100377
But SAP with Oracle tuning are usually not very much dependent on the platform, of course there are differences but they are not much.
Personally, I bought the SAP Performance Optimization Guide -->
http://www.sap-press.com/products/SAP-Performance-Optimization-Guide-(5th-Edition).html?
and SAP Database Administration with Oracle
http://www.sap-press.com/products/SAP-Database-Administration-with-Oracle.html
Nice books. Regards.

Performance of my query based on cube ? and ods?

hi all,
how to identify the performance of my query based on a cube nor ods. I have requirement which enables to do flat file extraction and the extraction is only once and the records are less too. I need to sort whether my query will be faster based upon cube nor on ods.
Can anyone let me know how to measure the performance of my query based upon cube and ods and how to find out which one will be faster. bcos i need to explain them the entire process of going to load the data directly to ods and do reporting from there nor data loaded directly to cube and do reporting from cube.
thanxs
haritha

Hi,
ODS is 2 Dimensional so avoid reporting on ODS,
Cube is MultiDim, for analysis perpose we can go reporting on Cube only
Records in ODS are Overwritten whereas in Cube records are Aggregated
and can also do compression on Cube, which will increase the query performance and so data retrieval in cube is faster
Thanks

Performance Tuning Data Load for ASO cube

Hi,
Anyone can help how to fine tune data load on ASO cube.
We have ASO cube which load around 110 million records from a total of 20 data files.
18 of the data files has 4 million records each and the last two has around 18 million records.
On average, to load 4 million records it took 130 seconds.
The data file has 157 data column representing period dimension.
With BSO cube, sorting the data file normally help. But with ASO, it does not seem to have
any impact. Any suggestion how to improve the data load performance for ASO cube?
Thanks,
Lian

Yes TimG it sure looks identical - except for the last BSO reference.
Well nevermind as long as those that count remember where the words come from.
To the Original Poster and to 960127 (come on create a profile already will you?):
The sort order WILL matter IF you are using a compression dimension. In this case the compression dimension acts just like a BSO Dense dimension. If you load part of it in one record then when the next record comes along it has to be added to the already existing part. The ASO "load buffer" is really a file named <dbname.dat> that is built in your temp tablespace.
The most recent x records that can fit in the ASO cache are still retained on the disk drive in the cache. So if the record is still there it will not have to be reread from the disk drive. So you could (instead of sorting) create an ASO cache as large as your final dat file. Then the record would already still be on the disk.
BUT WAIT BEFORE YOU GO RAISING YOUR ASO CACHE. All operating systems use memory mapped IO therefore even if it is not in the cache it will likely still be in on the disk in "Standby" memory (the dark blue memory as seen in Resource Monitor) this will continue until the system runs out of "Free" memory (light blue in resource monitor).
So in conclusion if your system still has Free memory there is no need (in a data load) to increase your ASO cache. And if you are out of Free memory then all you will do is slow down the other applications running on your system by increasing ASO Cache during a data load - so don't do it.
Finally, if you have enough memory so that the entire data file fits in StandBY + Free memory then don't bother to sort it first. But if you do not have enough then sort it.
Of course you have 20 data files so I hope that you do not have compression members spread out amongst these files!!!
Finally, you did not say if you were using parallel load threads. If you need to have 20 files read up on having parrallel load buffers and parallel load scripts. that will make it faster.
But if you do not really need 20 files and just broke them up to load parallel then create one single file and raise your DLTHREADSPREPARE and DLTHREADSWRITE settings. Heck these will help even if you do go parallel and really help if you don't but still keep 20 separate files.

Pause option in download context menu not working. Why?

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Performance tuning in Smart form

Hi,
How to performance tuning in Smart form level
Any tips available kindly send me any one .
Thanks&Regards,
Maya

Hi,
If you are using a customized print program to call the Smart Form...it is better to fetch most of the data as much as possible within it and pass it useing form interface/functional module interface.
Then in the ABAP code where ever used, fallowing the ABAP coding performance tuning options like avoiding the MOVE-CORRESPONDING, INTO CORRESPONDING, using binary search for READ statement...etc...
Regards,
Bharat.

Planning to start the performance tuning but....

Friends,
Database OS: RHEL AS 3.0
Database: Oracle Release 9.2.0.4.0
Number of Tables: 503
TableSpace size - 1.8GB out of 3GB
Max.Records in a Table - 1 Million and its increasing..
Our DB Optimizer mode is - CHOOSE (is it RBO?)
We are not using enterprise manager and not installed any tuning scripts like statspack etc....
Currently we are taking user managed backup without any problem so we are continuing the same from 2004 onwards.
Now we want want to tune our database.(We have never tuned our database)
We would like to change our optimizer from RBO to CBO.
Can anybody tell me the first step for the performance tuning?
Please dont suggest me oracle doc im already studying.....its taking time....
In the mean time......
Step 1: Can i Analyze the table or dbms_stat package?
We have not at all used the analyze or dbms_stat. So can i start with any of the above or do u have any other suggestions for the 1st step?
Thanks

our manager feels that if we tune our db the performance will be more than compared to the current one.you have a mystique manager then, ask him what kind of "feelings" does he have about my database ;) there is no place for feelings in this game, this is life cycle to be successful ; testing->reporting->analyzing->take nedded actions->re-testing->reporting->analyzing..
so while you are surely reading the documentation;
Oracle9i Database Performance Planning Release 2 (9.2)
http://download.oracle.com/docs/cd/B10501_01/server.920/a96532/toc.htm
Oracle9i Database Performance Tuning Guide and Reference Release 2 (9.2)
http://download.oracle.com/docs/cd/B10501_01/server.920/a96533/toc.htm
first thing you have to do is to setup an appropriate test environment with same os-oracle releases, parameters;
-- some of them to check
SELECT NAME, VALUE
FROM v$system_parameter a
WHERE a.NAME IN
       ('compatible', 'optimizer_features_enable',
        'optimizer_mode', 'pga_aggregate_target', 'workarea_size_policy',
        'db_file_multiblock_read_count', .. )and of course schema set and data amount. Then you run your application on load and take statspack snapshots and do the same after collecting statistics;
-- customize for your configuration, schema level object statistics
exec dbms_stats.gather_schema_stats( ownname =>'YOUR_SCHEMA', degree=>16, options=>'GATHER AUTO', estimate_percent=>dbms_stats.auto_sample_size, cascade=>TRUE, method_opt=>'FOR ALL COLUMNS SIZE AUTO', granularity=>'ALL');
-- check your system stats, with sys account
SELECT pname, pval1 FROM sys.aux_stats$ WHERE sname = 'SYSSTATS_MAIN';after you have the base report and the report after change compare the top 5 waits, the top queries which have dramatic logical I/O changes etc. At this point you go into session based tuning in order to understand why a specific query performs worser with CBO compared to RBO. You need to be able to create and read execution plans and i/o statistics at least. Here are some quick introductions;
http://www.bhatipoglu.com/entry/17/oracle-performance-analysis-tracing-and-performance-evaluation
http://psoug.org/reference/explain_plan.html
http://coskan.wordpress.com/2007/03/04/viewing-explain-plan/
and last words again goes to your manager; how does he "feel" about a 10gR2 migration? With Grid Control, AWR, ADDM and ASH performance tuning evolved a lot. Important note here, after 10g RBO is dead(unsupported).
Best Regards,
H.Tonguç YILMAZ
http://tonguc.yilmaz.googlepages.com/
Message was edited by:
TongucY

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....

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I am looking for "SAP Note 857530 "
Integration process performance(in sap XI).
or how can I view the performance of the integration process ? or exactly how performance tuning is done.
pls help,
Best regards,
verma.

Hi,
SAP Note:
Symptom
Performance bottlenecks when executing integration processes.
Other terms
ccBPM
BPE
Performance
Integration Processes
Solution
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This note will be continually updated as improvements are made.
Also read the document "Checklist: Making Correct Use of Integration Processes" in the SAP Library documentation, on SAP Service Marketplace, and in SDN; it contains information about performance issues to bear in mind when you model integration processes.
Refer to the appended notes and maintain the default code changes by using SNOTE, or by importing the relevant service packs. Note that some performance improvements cannot be implemented by using SNOTE and are instead only available in service packs.
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Hi Experts,
We are working with SAP Conversion agent..we have developed several scenarios on that...
But, Now we are worried about the performance issues on the same.
Can anybody share their experience on SAP Conversion Agent and any performance tuning guide on SAP Conversion Agent.
-S

Hi,
/people/bla.suranyi/blog/2006/09/29/conversion-agent--handling-edi-termination-characters
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https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/da1e7c16-0c01-0010-278a-eaed5eae5a5f - conversion agent
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What is Performance tuning in SAP BI

Hi
Could anyone please explain what is performance tuning in SAP BI?
I searched on google but dint get any proper documentation on that.
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Many Thanks
Emily
Moderator message: this is the wrong forum, please have a look e.g. in the forum for "SAP Netweaver BW", but search even harder for available information first.
Edited by: Thomas Zloch on Oct 31, 2011 5:58 PM

If you do a search in http://help.sap.com/erp2005_ehp_04/helpdata/EN/2a/fa0115493111d182b70000e829fbfe/frameset.htm
you will find lots of documentation:
Colin

SAP Business Objects Performance Tuning Guides

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I'm currently looking for Performance Tuning guides for the hardware/software. In particular, parameters for the hardware. I'm having a hard time finding any kind of guides on the server side of Business Objects. So I'm wondering if anybody knows of some that are available on the internet or SAP site?
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Here´s an updated version of that document:
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/50770d8f-5606-3010-28a6-9e3bb14ec6a7?QuickLink=index&…
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Regards,
Subhasish

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In sap bi performance tuning option is considered in cube not in ods, why?

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