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differences between session and call transaction methods

differences between session and call transaction methods

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    author's profile photo Former Member
    Former Member
    Posted on Sep 08, 2006 at 07:11 AM

    call transaction is Asynchronous method and

    session method is synchronous

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  • author's profile photo Former Member
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    Posted on Sep 08, 2006 at 07:44 AM

    For session method,these are the function modules to b used.

    BDC_OPEN_GROUP

    BDC_INSERT

    BDC_CLOSE_GROUP

    For call transaction,this is the syntax.

    CALL TRANSACTION TCODE USING BDCDATA

    MODE A or E or N

    UPDATE A or S

    MESSAGES INTO MESSTAB.

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  • author's profile photo Former Member
    Former Member
    Posted on Sep 08, 2006 at 07:13 AM

    Hi,

    Session method.

    1) synchronous processing.

    2) can tranfer large amount of data.

    3) processing is slower.

    4) error log is created

    5) data is not updated until session is processed.

    Call transaction.

    1) asynchronous processing

    2) can transfer small amount of data

    3) processing is faster.

    4) errors need to be handled explicitly

    5) data is updated automatically

    Session method is to populate the data by filling BDC structure and keep as session to process from SM37 to post in appropriate Transaction.

    Call transaction method is to post the data directly into the Transaction from an Executable program.

    Session method SAP defined Function modules.

    U can see more help on the differences in the SAP help.

    Regards,

    Ram

    Pls reward points if helpful

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  • Posted on Sep 08, 2006 at 07:14 AM

    session - batch input.

    log will be available.

    data will be buffered in client machine.

    call transaction - single entry.

    for any clarifiaction pls mail me.

    pls reward points, if this helped u.

    regards,

    anversha.

    anversha.shahul@wipro.com

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  • author's profile photo Former Member
    Former Member
    Posted on Sep 08, 2006 at 07:15 AM

    Hi

    Call transaction is used when the volume of data is limited...

    If the volume of data is very large, then session method comes handy...as the screens are populated with all the data and the session is created, which can be processed in the night, when the load on server is less...

    Regards,

    Raj

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  • author's profile photo Former Member
    Former Member
    Posted on Sep 08, 2006 at 08:45 AM

    hi,

    just to add a bit to above responses, in session method, no sy-subrc is returned due to the basic characteristic of session method. 'Call transaction' always returns

    Sy-subrc.

    Regards,

    VINNY

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