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Changing Source Systems.

Hi Experts,

The data is coming from two different Src systems A and B. We need to get rid of B and change all those data sources to the Src system A. Could any one put together the steps to be followed. Is there anything we should keep in mind while doing these changes.

Thanks in Advance.

Sandhya.

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6 Answers

  • Posted on Jun 15, 2005 at 04:12 PM

    Hi,

    These steps are done by the Basis administrators.You need to maintain & delete the unwanted source system from the source system hierarchy.

    Then proper source system mapping has to be done in RSA1 --> Tools --> Mapping of Source System Names & Assignment of Source Syst. to Source system ID.

    Is source system A contains all datasources as in B?

    Thank you

    Arun

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  • author's profile photo Former Member
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    Posted on Jun 15, 2005 at 04:20 PM

    Thanks Arun,

    No, Src system A does not contain all the data sources that are in B.

    Could you kindly help me with the steps involved in changing all the data sources to pertain to Src system A.

    Sandhya.

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    • Hi!

      Arun explained all the settings you need to take care when you are removing the sourcesystem B. i think you cannot copy the datasources from A to B unless both are of same type ..except in cases like transporting from dev to rpoductive system.

      in which system are you working. and what are the source system type.are they SAP systems.

      with regards

      ashwin.

  • Posted on Jun 15, 2005 at 04:40 PM

    Hi,

    More important is both the source system is of same type (R3 or CRM etc) and also is in same version and also in same patch level.

    It is not that simple removing an existing source system from the BW extraction process.

    Make all these tests and discuss with the basis team on how to migrate your datasources and more importantly will both the system has the same data.

    Thank you

    Arun

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  • author's profile photo Former Member
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    Posted on Jun 15, 2005 at 04:47 PM

    Assuming that the second source system is not yet created in BW, you could run BDLS to change the logical system names ELSE you could 'save for system copy' procedure.

    If you want to do one of these & live in US, please send me your fax number & I have a document that gives you the steps.

    Kumar Gudiseva.

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  • author's profile photo Former Member
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    Posted on Jun 15, 2005 at 05:36 PM

    Thanks Ashwin, Arun & Kumar,

    We are working on the development systems. This data already exists in the Production system. Both are SAP R/3 source systems. I am not sure about the patches but will get it confirmed. Do I have to worry about the patches in BW or I have to consider the patches in R/3 also.

    The second data source already exists in BW. But still, It would be nice to learn something new. So could you kindly send the fax. My fax number is 212-937-2000. Once again thanks a lot.

    Sandhya

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    • Hi!

      so what i understood from your post is... In your productive BW system you have some Infoprovides which get data from 2 r/3 source systems A&B and now you are trying to remove the source system B and transfer all its datasources to A.

      if it is so.. then i think you can transfer the datasources from A to B(if both are simmilar systems) then replicate them in BW from A.

      what are you planning to do with exisiting data in BW where you have source system specified as B.

      I think you should also give a thought about transferrules which are assigned to B. you got to copy them to new transfer rules which map the symilar datasoruces from A to the existing Info sources.

      with regards

      ashwin

  • author's profile photo Former Member
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    Posted on Jun 15, 2005 at 07:20 PM

    I just faxed you two sheets.

    Sorry, the second one is not very neat but I think it will give you good hints.

    In your scenario, you could delete the second source system & run BDLS (following the instructions in these sheets) OR

    Capture all transfer rules for one source system using 'save for system copy', change the source system mappings & reimport this transport. After this is done, you could delete the other source system.

    Good luck.

    Kumar Gudiseva.

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