bdc....?

Former Member — Wed, 25 Jul 2007 06:54:34 GMT

hi,

whats the difference between call transaction and session? what to chose if required? and how it is different from lsmw?

Thanks.

Re: bdc....?

Former Member — Wed, 25 Jul 2007 08:28:55 GMT

What is the difference between batch input and call transaction in BDC?

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

Differences between bdc session method and call transaction method.

The most important aspects of the batch session interface are: - Asynchronous processing - Transfers data for multiple transactions - Synchronous database update During processing, no transaction is started until the previous transaction has been written to the database. - A batch input processing log is generated for each session - Sessions cannot be generated in parallel

The most important aspects of the CALL TRANSACTION USING interface are: - Synchronous processing - Transfers data for a single transaction - Synchronous and asynchronous database updating both possible The program specifies which kind of updating is desired. - Separate LUW for the transaction The system performs a database commit immediately before and after the CALL TRANSACTION USING statement. - No batch input processing log is generated.

LSMW is having different different options and as in BDC we have to code

a program but i suppose the main difference in both the cases is:-

LSMW has been developed mainly for the Functional people who has no

knowledge of the technical aspects of report or BDC in ABAP because its very user friendly and handy to use.

So, simply they can upload the master records using LSMW.

Earlier they had to contact to a ABAP person and ask him to create a BDC taking extra time and efforts.

we use BDC for custom applications.we use LSMW for standard applications and tcodes.

BDc is technique provided by SAP to upload data from legacy to r/3. where as LSMW is a toll to upload data.

In BDC we have to write coding but in LSMW no need to wrtie logic.

LSMW is used only for single time uploading where as we can use BDC pg as many times we want

regards,

srinivas

<b>*reward for useful answers*</b>

Re: bdc....?

Former Member — Wed, 25 Jul 2007 08:30:29 GMT

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

Check these link:

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

http://www.sap-img.com/abap/question-about-bdc-program.htm

http://www.itcserver.com/blog/2006/06/30/batch-input-vs-call-transaction/

http://www.planetsap.com/bdc_main_page.htm

Regards

Re: bdc....?

Former Member — Wed, 25 Jul 2007 08:48:49 GMT

Hi,

Session Method -

To process large data

Handling of errors is easy

Call transaction

Less data

Regards

Arun

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