difference b/n psa&idoc

[Former Member]

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

[Former Member]

Hi venu

go through these previous threads on similar question

gives u clear idea

Regards

Kiran

[Former Member]

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:

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

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