what is the difference between call transaction and session input method?

[Former Member]

what is the difference between call transaction and session input method?

[raymond_giuseppi]

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

Look at <a href="http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm">Difference Between Batch Input and Call Transaction in BDC</a>

Regards

[Former Member]

Hi Nagaraju,

Here the differences betrween session and call transaction

session method

1) asynchronous process

2)synchronous update

3)multiple transactions can be handled (Menas u can upload the data at a time formore than one t-code)

4)huge amount of data can be uploaded.

5)implicit error handling (Menas for errors SM35)

6)execute the session on a specific date. (by using hold date parameter)

7) Time requirement is more

Call transaction:

1)asynchronous process

2)asynchronous /synchronous update

3) single transaction only handled

4)small amount of data uplaoded

5)explicit error handling (Menas all the error records move to internal table and validate)

6) Time requirement is low.

Hope this helps you.

Regards,

Kumar.

[Former Member]

Hi,

BDC:

Batch Data Communication (BDC) is the process of transferring data from one SAP System to another SAP system or from a non-SAP system to SAP System.

Features :

BDC is an automatic procedure.

This method is used to transfer large amount of data that is available in electronic medium.

BDC can be used primarily when installing the SAP system and when transferring data from a legacy system (external system).

BDC uses normal transaction codes to transfer data.

Types of BDC :

CLASSICAL BATCH INPUT (Session Method)

CALL TRANSACTION

BATCH INPUT METHOD:

This method is also called as ‘CLASSICAL METHOD’.

Features:

Asynchronous processing.

Synchronous Processing in database update.

Transfer data for more than one transaction.

Batch input processing log will be generated.

During processing, no transaction is started until the previous transaction has been written to the database.

CALL TRANSACTION METHOD :

This is another method to transfer data from the legacy system.

Features:

Synchronous processing. The system performs a database commit immediately before and after the CALL TRANSACTION USING statement.

Updating the database can be either synchronous or asynchronous. The program specifies the update type.

Transfer data for a single transaction.

Transfers data for a sequence of dialog screens.

No batch input processing log is generated.

Check these link:

http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm

Regards,

Priyanka.

[naren112]

<b>Hi Nagaraju ,

Call transaction and session method - I am explaining each one by taking one example .

eg uploading customer master data -Tcode Xd01 .

In Session method --- in coding part after recording we hav to call three function module - BDC_OPEN_GROUP

BDC_INSERT

BDC_CLOSE_GROUP

.

Pass the transaction code in FM Bdc_insert .

Define - Group and keep ( for keeping the session in SM 35 after processing )

And define the suroutine --- FORM BDC_DYNPRO USING '.. ' ' ... '.

FORM BDC_FIELD USING ' ..' ' ..'

In Call transaction - Define one itab for Handlin the error .

Call Transaction 'tcode' using BDCDATA mode '.. ' update ' ..' .

Theortically you can read all the points that you got in above replies ..

If you hav any doubt fire the question .

Regards ,

Narender B .

Rewards if helpfull</b>