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EM parameters: History Table

Dear All,

I need to keep track of all the value changes of the control/info parameters of an event handler during the time: do we have a table in EM where are stored all the values assigned to the same control/info parameter?

Thanks,

Pietro

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4 Answers

  • Jun 23, 2016 at 02:19 PM

    Hi Pietro,

    you could enable Change Documents on the EH Type.

    This would also track changes on Control Parameters in standard SAP Change Document functionality.

    You can see the changes then i a tab in /SAPTRX/EH_LIST.

    But i would do not recommend it especially if you have a high volume of data. It will have a severe performance impact.

    Best regards,

    Steffen

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  • Jun 23, 2016 at 03:58 PM

    If you are loading/updating parameters through events, then use /SAPTRX/EVM_PAR table. This will store the history of parameters which got updated through various events. Only thing you will not be able to see are the parameters loaded through AOType during initial creation or changes to application data.

    Thanks,

    Vishnu

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    • Former Member PIETRO MAROVELLO

      Hi Pietro,

      Steffen directed you correctly. Yes we can track control/info parameter through Change Doc Activation.  However, please ensure that you have enough resource requirement once you activate Change Doc Activation.  Most of the clients do not activate Change Doc and History in production systems due to performance issue and highly used storage resource.

      Regards


      GGOPII

  • Jun 24, 2016 at 12:37 PM

    So, the only way to keep track of all the control/info parameters values during the time is the "change doc activation" functionality, but it can generate performance issues.

    From a performance point of view, do you think it would be better to create a function module in the rule set where,  for the combination tracking ID-event code, I write all the received values of the parameters in a custom table?

    Best regards,

    Pietro

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  • Jun 27, 2016 at 03:10 PM

    Hi Steffen,

    is the customizing about "Log EH Posting", "Log Msg.Proc." and "Log exr.Updates" related to the "Change doc. Activation" functionality?

    In case yes, if  I select "no logging" for the three options can I reduce the performance impact?

    I checked it is enough in order to keep track of the parameters changes.

    Best regards,

    Pietro

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    • Former Member PIETRO MAROVELLO

      Hi Pietro,

      I have given the count because we didn't face any issue in our previous project which was count less than 25000.  However, it varies depends on project to project, based on number of fields extraction in System/Control/Info parameters etc.

      You can check and simulate the scenario with performance testing team (if you have one) with activating change documents activation and posting events then you know what is resource require to achieve your expected results.

      Regards


      GGOPII