Queries against ODS vs. Cube

I'm looking for best practices relating to when you should or should not develop queries against ODS. I am familiar with the standard considerations like level of granularity and so forth but would like to be able to analyze each situation more thoroughly. Does anyone know if there is a document that discusses this topic?
Thanks, Carol

Hi,
There is no right and wrong answer for this question. There are more pros and cons.
The major Cons con in the performance area (in my opinion). ODS objects should not be used for slice and dice analytics but for more list type reports (more operational in nature) Please check the BW performance materials on the BW home page for more information. (http://service.sap.com/BW -> Performance).
Cheers,
Mike.

Similar Messages

Error while loading data from write optimized ODS to cube

Hi All,
I am loading data from a write optimized ODS to cube
I have done Generate Export Datasource
schedulled the info packge with 1 selection for full load
then it gave me following error in Transfer IDOCs & TRFC
Info IDOC 1: IDOC with errors added
Info IDOC 2: IDOC with errors added
Info IDOC 3: IDOC with errors added
Info IDOC 4: IDOC with errors added
Data packege 1 arrived in BW Processing : selected number does not agree with transferred number
Processing below is green
shows update of 4 new records to Datapackage 1.
Please provide inputs for the resolution
Thanks & Regards,
Rashmi.

please let me know, What more details you need?
If I click F1 for error details i get following message
Messages from source system
see also Processing Steps Request
These messages are sent by IDoc from the source system. Both the extractor itself as well as the service API can send messages. When errors occur, several messages are usually sent together.
From the source system, there are several types of messages that can be differentiated by the so-called Info-IDoc-Status. The IDoc with status 2 plays a particular role here; it describes the number of records that have been extracted in a source system and sent to BI. The number of the records received in BI is checked against this information.
Thanks & Regards,
Rashmi.

Data in ODS, Info cube ans Multiprovider(List cube) are in Sync.

Hi,
My query is built on multiprovider. The data flow is data source u2013 ODS then ODS u2013 Info cube and multiprovider contains Info cube only.
Data in ODS, Info cube ans Multiprovider(List cube) are in Sync.
The query results are not tie up ODS, Info cube ans Multiprovider(List cube).
Any one let me know why this is happening and how do I resolve it.
Regards,
Sharma.

HI;
thanks for help.
I resolved the issue in my own.
Regards,
Sharma.

New fields addition to BW 3.5 version ODS and Cube and transport to PRD.

Hi,
We have a scenarion on 3.5 wherein there is a enhancement to ODS and Cube(few new fileds are added), this New ODS also feeds data to Cube. Since we do not had data on Quality system, we had no problem in adding fields to ODS and cube, but now we need transport these changes to Production, In production ODS and Cube has large data. we have few doubts.
1. Shall we need to delete data from ODS and Cube then Transport request to Production server.
2. Is it ok to move transport request without deleting data in ODS and Subsequent Cube in production system
Guys and Gals,
what is your suggestion on this one. WE are in BW 3.5 only. No BI7.
Please revert back.

Hi
you can directly transport that to production.
the image will over write with the existing one and for the new object add , a new table space will be created.
it will not affect the Old data
But in the Cube even if the data is there there is a concept called remodeling
http://help.sap.com/saphelp_nw70/helpdata/en/58/85e5414f070640e10000000a1550b0/content.htm
hope this helps
santosh

Delta load from ODS to cube failed - Data mismatch

Hi all
We have a scenario where the data flow is like
R/3 table - >dataSrc -- > pSA - >InfoSrc -> ODS ->Cube.
The cube has an additional field called "monthly version"
and since it is a history cube , it is supposed to hold data
snapshots of the all data in current cube for each month .
We are facing the problem that the Data for the current month
is there in the history ODS but not in the cube . In the ODS ->Manage->requests
tab i can see only 1 red request that too with 0 recs.
However ,In the cube -> manage-> reconstruction tab , i can see 2 Red request
with the current month date. Could these red requests be the reason for
data mismatch in ODS and cube .
Please guide as to how can i solve this problem .
thanks all
annie

Hi
Thanks for the reply.
Load to Cube is Delta and goes daily .
Load to ODS is a full on daily basis .
Can you help me how to sort this issue . I have to work directly in production env . so has to be safe and full proof .
Thanks
annie

Data loading from ODS to CUBE

Hi All,
I have loaded data from ODS to CUBE. now i have requirement to add some fields in the standard cube. so, for testing purpose i have created copy of the original and created transformation . now when i try to load data from ODS it shows me no more data available . while data is already there in ODS.
now what should i do ? i don't want to delete data from original cube. is there any other way to load data through transformation ?
Regards,
Komik Shah

Hi,
Check the DTP of old cube n see whether its Delta. If yes then check whether any one of the foll is check:
1) get delta only once
2) get data by request.
If 1 is checked then delta wont come for the second cube as it says to get delta once and delta is already in one of the cube.
Generally both should be unchecked but can vary as per requirements.
Now for your new DTP, i dont think it will aloow you to change to FULL.
If its allowing you to select FULL, then select it and select from acive table.
try to load and see.
regds,
Shashank

How to load data from a ODS to CUBE Request ID - by - Request ID?

How to load data from a ODS to CUBE Request ID - by - Request ID?
The problem is that... some requests had been eliminated of the cube and the delta control between the ODS and CUBE was lost. The flag "data mart status of request" of all the requests of the ODS had been blank.
Now it is necessary to load some requests from the ODS for the cube.
Notes:
- it is not possible to make a complete load selecting the data to be loaded;
- the PSA is not being used;
- considering the data volume it is impracticable to reload the cube completely.
Thanks in advance,
Wesley.

Dear R B,
Considering the following:
-> the delta control was lost;
-> the data already are active in the ODS;
-> part of the data of the ODS already is in the cube.
The indicated procedure it only guarantees the load of the data that are in the ODS and that are not in the cube.
Tks,
Wesley.

Error in updating data from ODS to CUBE.

Hi,
I am tryin to load data manually from ODS to CUBE in NW2004s.
This is a flat file load from the datasource to the ODS and then from the ODS to the CUBE.
In the CUBE, I am trying to populate fields by using the ODS fields.
For eg.
In the ODS, a CHAR Infoobject has the data in the timestamp format(i.e. mm/dd/yyyy hh:mm ). I need to split this data and assign them to the two individual DATE and TIME Infoobject in the CUBE.
For this, I have done the coding in the Transfer Structure in the Rule Group.
The time field is gettin populated , but the date field is not getting populated.
I get an error as Eg:
Value '04052007' for CHAR 0DATE is not plausible
Due to this, the corresponding records is not getting displayed
Also, the records where the time id displayed, the date is not getting displayed inspite of the date being correct.
Please help me with a solution for this.
REMOVED
Thanks In Advance.
Hitesh Shetty

Hello Hitesh
SAP accepts the date format in YYYYMMDD, so in the routine where you have concatenate the day month year...just do it in reverse order.....
Thanks
Tripple k

Error while uploading data from ODS to Cube

Hi All,
Will you please help out this issue.As this is a priority high issue,please reply if you know the answers.
I am facing an error while loading the data from ODS to CUBE,the error
is
1.Name is not in the namespace for generated BW Metaobjects
2.Error 18 in the update
And this error is occuring only in quality server.
Thanks,
Ram.

HI RAM SIVA,
make sure that the Data source is replicated and tranfer rules r active.
And also check whether the all transport requests r imported properly.
hope it helps
bhaskar

Error while loading data from ODS to CUBE.

Hi friends,
When l am loading data from ODS to Cube with help of data mart, I am getting error in QA system , IN DM system ,every thing went well.IF i see the detail tab in monitor under Processing .
Its is showing like this .
Transfer Rules : Missing Massage.
Update PSA : missing massage.
Processing end : missing message.
I have checked the coding in update rules, everything is ok.
Plz any inputs.
hari
Message was edited by:
hari reddy

Might means that IDocs flow is not defined properly in your QA system for myself-SourceSystem.
Regards,
Vitaliy

Transformation from ods to cube IN BI 7.0

Hi there, I will appreciate if anybody can help, I want to know if I want to assign the constant value to a field in transformation from ods to cube what is the way out.as i can choose the constant in update in BW3.5 but what is the step in BI 7.0
thanks
Soniya

Go to rule type column right clicj and select rule details. Under rule type u can fuind the option of constant.
http://help.sap.com/saphelp_nw04s/helpdata/en/e5/f913426908ca7ee10000000a1550b0/content.htm
KJ!!!

ODS to CUBE loading - taking too much time

Hi Experts,
I am loading data from R/3(4.7) to BW (3.5).
I am loading with option --> PSA and then Data Target (ODS ).
I have a selection criteria in Infopackage while loading from standard Datasource to ODS.
It takes me 20 mins to load 300K records.
But, from ODS to Infocube ( update method: Data Target Only), it is taking 8 hours.
The data packet size in Infopackage is 20,000 ( same for ODS and Infocube).
I also tried changing the data packet size, tried with full load , load with initialization,..
I tried scheduling it as a background job too.
I do not have any selection criteria in the infopackage from ODS to Cube.
Please let me know how can I decrease this loading time from ODS to Infocube.

Hi,
To improve the data load performance
1. If they are full loads then try to see if you make them delta loads.
2. Check if there are complex routines/transformations being performed in any layer. In that case see if you can optimize those codes with the help of an abaper.
3. Ensure that you are following the standard procedures in the chain like deleting Indices/secondary Indices before loading etc.
4. Check whether the system processes are free when this load is running
5. try making the load as parallel as possible if the load is happening serially. Remove PSA if not needed.
6. When the load is not getiing processed due to huge volume of data, or more number of records per data packet, Please try the below option.
1) Reduce the IDOC size to 8000 and number of data packets per IDOC as 10. This can be done in info package settings.
2) Run the load only to PSA.
3) Once the load is succesfull , then push the data to targets.
In this way you can overcome this issue.
Ensure the data packet sizing and also the number range buffering, PSA Partition size, upload sequence i.e, always load master data first, perform change run and then transaction data loads.
Check this doc on BW data load perfomance optimization
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
BI Performance Tuning
FAQ - The Future of SAP NetWeaver Business Intelligence in the Light of the NetWeaver BI&Business Objects Roadmap
Thanks,
JituK

Loading through Process Chains 2 Delta Loads and 1 Full Load (ODS to Cube).

Dear All,
I am loading through Process chains with 2 Delta Loads and 1 Full load from ODS to Cube in 3.5. Am in the development process.
My loading process is:
Start - 2 Delta Loads - 1 Full Load - ODS Activation - Delete Index - Further Update - Delete overlapping requests from infocube - Creating Index.
My question is:
When am loading for the first am getting some data and for the next load i should get as Zero as there is no data for the next load but am getting same no of records for the next load. May be it is taking data from full upload, i guess. Please, guide me.
Krishna.

Hi,
The reason you are getting the same no. of records is as you said (Full load), after running the delta you got all the changed records but after those two delta's again you have a full load step which will pick whole of the data all over again.
The reason you are getting same no. of records is:
1> You are running the chain for the first time.
2> You ran this delta ip's for the first time, as such while initializing these deltas you might have choosen "Initialization without data transfer", as such now when you ran these deltas for the first time they picked whole of the data.Running a full load after that will also pick the same no. of records too.
If the two delats you are talking are one after another then is say u got the data because of some changes, since you are loading for a single ods to a cube both your delta and full will pick same "For the first time " during data marting, for they have the same data source(ODS).
Hope fully this will serve your purpose and will be expedite.
Thax & Regards
Vaibhave Sharma
Edited by: Vaibhave Sharma on Sep 3, 2008 10:28 PM

Automatic loading from ODS to Cube in 3.5

Hi All
I was under the impression that in version 3.5 in order to load delta from ODS to Cube you had to run the 8 series Ipak.
However I have recently noticed that this ipak is running automatically after a delta load into the ODS even when the load is not via a process chain.
Can somebody where and how this setting is maintained.
Regards
A

Hi,
Go to ODS display mode and check if "Update Data Automatically" is ticked in Settings.
Regards,
Kams

Error when loading from ODS to Cube

Hello Friends,
I am having trouble loading data from ODS to Infocube in my 2004S system.When loading data i get this message
07/03/2007     13:10:25     Data target 'ODSXYZ ' removed from list of loadable targets; not loadable.
07/03/2007     13:28:42     Data target 'ODSXYZ ' is not active or is incorrect; no loading allowed
I checked for ODSXYZ in my data target but there is nothing by that name.Even the infopackage doesnt have it.What needs to be done.Please help.
Thanks.

Its a expected behavior. When you migrate ur DS, the infopacks associated with it, will grey out all the data targets that they were feeding before, that applies to any infopack you create even after the migration. You womt be able to delete it.
Having said this, this shouldnt impact ur loads from ODS to Cube. As this shoudl be taken care of by ur DTP's rather than ur infopacks.
A few questions:
How are you loading ur cube?
Did the data get thru fine to PSA with the infopack in question?
How did you load ur DSO(assuming the load was successful)?
Message was edited by:
        voodi

Queries against ODS vs. Cube

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