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author's profile photo Former Member
Former Member

difference b/n psa&idoc

hi

experts

can anybody give the main difference b/n psa&idoc

as per my knowledge psa is used for error handling,loading same data to the other data targets& as because of data packet size is more it will improve data loading performane,if so, what for we use.

is it not possible to load data to the external systems from psa,ifso

kindly give clear picture about idoc

thanks in advance

venu

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2 Answers

  • author's profile photo Former Member
    Former Member
    Posted on Jan 09, 2007 at 08:13 AM

    Hi venu,

    There are two transfer methods for SAP systems:

    • With the IDoc method, IDoc interface technology is used to pack the data

    into IDoc containers.

    • With the PSA transfer method, IDoc containers are not used to send the data.

    Instead, the data is transferred directly in the form of a transfer structure.

    Information is sent from the source system (no data) through the IDoc

    interface (info IDocs). This information can be, for example, the number

    of data records extracted or information on the monitor.

    <b>Differences:</b>

    <b>PSA</b>

    1. Data record length, max. 1962 bytes

    2. Number of fields per data record: Restricted to 255

    3. Uses tRFC as transfer log

    4. Advantage: Improved performance since larger data packages can be transported.

    Possible to work with error handling.

    5. More common technology since it brings with it a better load performace

    and gives you the option of using the PSA as an inbound data store (master

    data and transaction data).

    <b>ALE (data IDoc)</b>

    1. Data record length, max. 1000 bytes

    2. Uses tRFC as transfer log

    3. Uses Info-IDocs Uses info and data IDocs

    4. Advantage: More detailed log through control record and status record for

    data IDoc.

    5. Use with hierarchies

    For more info:psa--idoc

    Also check:

    http://help.sap.com/saphelp_nw04/helpdata/en/e3/e60138fede083de10000009b38f8cf/frameset.htm

    http://help.sap.com/saphelp_nw04/helpdata/en/35/2cd77bd7705394e10000009b387c12/frameset.htm

    Bye

    Dinesh

    (Do not forget to assign points!!)

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  • author's profile photo Former Member
    Former Member
    Posted on Jan 09, 2007 at 08:15 AM

    Hi venu

    go through these previous threads on similar question

    psa-and-idoc-urgent

    psa--idoc

    gives u clear idea

    Regards

    Kiran

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