Reg. ODS / DSO

Hi every body
In ods / dso what should be maintained in Key Fields and Data Fields.
regards
Sridhar
[email protected]

Hi Sridhar,
The Key Fields are the ones which are unique in nature and by which you can easily distinguish 2 records or datasets.
For Example: Customer ID or Employee ID both are unique as no 2 customers or Employees can be assigned the same ID.
So in your ODS/DSO all those fields which can uniquely identify a record should be Key Fields.
Having said that, please look at your Requirements and decide Key Fields as it has a lot of Implications in Modelling and performance. As when you have same values of key fields in an ODS (when loading data) , data field values are either overwritten or added based on the update option you hae selected in your update rules.
Please search forum , tyou will get lot of information.
Thanks
CK
Message was edited by:
Chitrarth Kastwar

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Hi Vikram,
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You will find three Tables
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Check this blog for more info
/people/raj.alluri/blog/2006/11/24/the-tech-details-of-standard-ods-dso-in-sap-dwh
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Hi,
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hi
i am facing data from problem from dso to cube
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plant   material doc_num itemno qty
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p1      m1           1               2         20
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doc_no
item_no
doc_year
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material
plant
qty
while loading data into cube
its showing only
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ple let me know ur idea.

Hi,
The problem is in your ODS/DSO.
In your ODS you have 'Doc_num' as key field.
For both Items 1 & 2, you have same key field ( Doc_Num) Value.
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If you want to send both doc_nums to cube, you need to bring doc_num to the data fields area of ODS.
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hello,
1)the sid generation check box is ticked.
2)the oprofit_ctr is already set to read data from Master data for filter value selection.and about navigational attribute we are using only four navigational attribute.
3) turn on the cache in RSRT for the query built on DSO.
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I believe your problem is with variable selection of 0profit_c... that values are shown after 30 mins for selection. Settings at ODS / DSO will not help.
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Got one error while activating data in dso

Hi,
I am loading some data to SAP given dso 0figl_o02. while doing so i got one error with following description
Error short text : "Value "CONVERSION REVERSAL " from characteristic 0DOC_HD_TXT contains an error at position 20"
Long text : "Characters that have a hexadecimal format between HEX00 and HEX1F are not permitted in characteristic values. The 20th character is one of these characters. The value is therefore not permitted.
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Thanx

Hi Sudeep,
First you need to get the values from characteristic 0DOC_HD_TXT that contains an error.
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Then go to PSA select all data packets and number of records (give full number of the records transfered) and then enter. It might take sometime if you have huge data. Once you get the records then filter on the 0DOC_HD_TXT column and then give the value you copied from the log.
Then you can edit the special char (remove) or if you want that to be displayed then paste the same spl. char in RSKC and execute.
Activate it again.
Hope it helps...
Best Regards,
MK

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also
I see 3 type of DSO(Standard, Write-optimized, Direct update )
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See this link on DSO, with examples etc:
http://help.sap.com/saphelp_nw04s/helpdata/en/F9/45503C242B4A67E10000000A114084/content.htm
I am looking for such summary also for Cubes have you see a similar one?
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New terminology in BI 7.x
Transactional ODS = DSO for direct update
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Loading to DSO for Lookup

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I have created a DSO with just MATNR and one of its bespoke attributes(Catalogue number) and extracted from 0Mat_Sales_Attr.(MVKE).
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Hello all,
Some one please explain me about what exactly means After image , Before image , reverse image and delete image with example!
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Regards
Ram

Hi Ram
Pls ck this blog.
No bef and aft Images in ODS.
/people/raj.alluri/blog/2006/11/24/the-tech-details-of-standard-ods-dso-in-sap-dwh
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Logical partitioning of an ODS - when / what size e.g. 100 Mio records?

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we got an ODS/DSO with about 80 fields and we are currently planning futher rollouts which will lead to an overall volume in the DSO about 100 Mio records.
I wonder if this volume for a DSO is still fine to do reporting and loading / activation with good performance?
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50 Mio -> Region EMEA, APJ
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Axel

100 Mo records is not such a big DSO. You should not encounter problems for loading and/or activating your DSO.
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You can logically partitionned any kind of infoProvider, but I've never seen this for DSO (I'd rather partition the upper levels and have a DSO with all data).
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Fred

Loading data from Z table to an ODS in BW/BI

Hello Gurus,
Can some one guide me how do I load data from a Z table which exists in the same BI system into an ODS/DSO. I'm working on a 04S system.
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Thanks & Regards,
Prashanth

hi Prasanth
u r using generic extraction method to load data from R/3 to BW server
u can use
T.Code SBIW or RSO2 to create Generic DataSource.
step 1- logon to R/3 system
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Db table name --- ZXXXXX.
1.     select " Display " button.
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zXXXXX.(specify ur datasource name to create a new one).
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     appl.. component --- (browse and choose ur application component)(EX- sd).
     Extration from DBView"
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     Select generic delta option in toolbar.
     Give delta specific field
     Field name---- (ex- pid)
     Select any radio button(ex-numeric pointer).
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     Select save save .
     Package -
some package name.
     Save
     Continiue
     Coustomize the datasource by seleting selection check boxes for fields.
     Save
     MSg:- datasource hve been created.
SAP BW side:
Step :1
Enter t.code rsa13.
     Identify R/3 source system icon.
     Double click on R/3 s . system.
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     Expand sap Appl. Comp..
     Select ur application component( for Ex- SD).
     Context menu -- replicate datasource
     Refresh tree once the replication is complete.
     Find ur datasource.
     Double click on data source icon { this implies data source is not assigned).
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     Assign infosource..
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o     select others radio button
o     and select optioncreate.
     Flexible update.-------XXXXX
     Des----XXXXXX
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ODS Partitioning ?

Hi -
I am looking for guidelines regarding ODS/DSO Partitioning.
We are dealing with the LO extractor which brings billing conditions into BW/BI (We are running BI 7). We expect very large volumes of data from this extractor.
We plan to implement a design the follows EDW standards. First level write-optimized DSO, second level standard ODS, and finally into a cube. Most of our transformation will occur between the first and second level DSO - including any filtering.
As we are working out the details of our design, we are trying to determine if we should utilize logical partioning for the first and second level DSO Objects.
Are there any guidelines around maximum ODS Size? Does anyone have reccomendations regarding ODS Partitioning?
I have searched the forum and found plenty of information on logical partitioning of Cubes but have found nothing regarding ODS objects.
Points will be awarded.... Thanks for your help.

Wond -
Thanks, your answer is helpful. I guess in terms of loading from the ODS - I will be loading a delta to the cube so the actual load will come from the change log - it will not be by selection. The change log wont be large so, except for the initial load - it should manageable.
Regarding activiation. When activation occurs, determining if an existing record exists would be done via the semantic key... correct? There would be an index on the key of the ODS - so the search would not be a sequential read through the entire table - it would be and index search. So, would activation really suffer as you suggested?
Lets say I decide to partition it - what number of records or size per ODS would I want to achieve... again, I would look for a guideline from SAP or others from experience to say... If you are going to go throug the work to partition your ODS you want to keep them under X records or X Size.
Any ideas?
Some points awarded.... some points remain!! Thanks.

ODS reports Vs Cube reports

Hi,
Pl let me know the advantages or disadvantages of reporting on ODS Vs Cube. Which one will be better option and why.
Pl explain.
Thanks & Regards,
Vijaya

hi vijaya,
INFO CUBE
summerised form of data
star schema
dimentional
additive data functionality
performance is better as compared to ods
DSO
detailed form of data
flat file formate structure
two dimentional
performance is less as compared to cube
overwrite data functionality
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plz assign points if it helpful
regards
vadlamudi

Cube/ODS ideal size

Hi Team,
What is the ideal (Recommended) size of Cube or ODS?
1>How Many Records can a cube handle with out any problem. Is there any standard number of records at where we start to see issues like data load issues, Query performnace, Attribute change run ...etc etc.....is 50 M records Ideal?
2>How about the same (as above) for ODS/DSO?
3>What will be the key issues if we do not take any action (data deletion, Archiving etc) against present BW systems and if the system sizes grows rapidly every year?
Regards,
TRA.

Hi TRA:
Run SAP Note: 917803
http://www.comeritinc.com/UserFiles/file/tips%20tricks%20to%20speed%20%20NW%20BI%20%202009.ppt.
Thanks,
Sandhya

Reg. ODS / DSO

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