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Is it feasible to dynamically move instance between two SAP systems?

The scenario is there are two SAP systems PRD and TES, each contains 1 CI + n DI.

Question is if it is possible to remove one or several DI from system TES and add it to system PRD without restarting both systems? The intention is to utilize the hardware resource of system TES (test system) during peak hour.

Don't know if any customer has the similar request, any comments are appreciated.

Thanks!

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    author's profile photo Former Member
    Former Member
    Posted on Jul 22, 2008 at 11:43 AM

    Hi,

    On the same host, install 2 DI : one for PRD and one for TES.

    Start the PRD DI and stop the TES DI

    or

    start the TES DI and stop the PRD DI.

    You don't have to stop the whole system. Just check that the DI to be stopped is not used at that time.

    Regards,

    Olivier

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    • Former Member Former Member

      Hi again,

      It is possible to remove DI2 from TES with no restart of TES. You just have to make sure that DI2 is not used before stopping DI2.

      It is possible to reconnect DI2 to PRD without reinstalling a new DI but it is a little tricky and is NOT supported by SAP.

      The best way, as I told you in the first place is to install a DI for PRD on the host where DI2 is. There is no need to uninstall DI2 and no need to stop PRD. Then you can start the one you need.

      Regards,

      Olivier

  • author's profile photo Former Member
    Former Member
    Posted on Jul 22, 2008 at 11:29 AM

    Hi

    You have to consider some points:

    - Logon groups

    - Parameters related to SAP and Database

    When there is not any entry related to the specific DI in CI, then you can stop the DI and make the system according to other one.

    Its not harmful thing to do. It would not affect the current CI system.

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    • Former Member

      >

      > Hi

      >

      > You have to consider some points:

      > - Logon groups

      > - Parameters related to SAP and Database

      >

      > When there is not any entry related to the specific DI in CI, then you can stop the DI and make the system according to other one.

      >

      > Its not harmful thing to do. It would not affect the current CI system.

      Hi Deepak,

      Thanks a lot for the answer, just to clarify one point: what do you mean by "when there is not any entry related to the specific DI". My understanding is there is always related entry between DI and CI ?

      Regards,

      Tim

  • author's profile photo Former Member
    Former Member
    Posted on Jul 25, 2008 at 08:07 AM

    Hi Oliver,

    Thanks a lot for your patience and suggestions.

    Install two DIs on one host would be a better choice.

    Regards,

    Tim

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