04-22-2006 5:32 AM
04-22-2006 5:52 AM
Hi Raghav,
BDC and LSMW are the two data migration techniques (from legacy to SAP) . BDC technique is usually done by ABAPers. It consists of three methods.
1) Call Dialog Method
2) Session Method
3) Call Transaction Method
In the case of Session Method , a BDC Session is created , which has the data and info to run it in batch mode. When the user runs this session, every transactions are run in batch mode and tables are updated.
WHile in call transaction, no session is created. Instead , a report prog is created , which takes input from the file and calls the transaction in Batch mode.
Call dialog method is similar to call transaction, except that updation is done by the calling program itself.<b>This method is obsolete</b>.
Advantages of Batch Input Method are
1)Can process large data volumes
2) data integrity is maintained
Just check these links.
Regards,
SP.
04-22-2006 8:21 AM
04-22-2006 8:27 AM
Hi Raghavendra,
I have doc related for ur topic. Please provide with ur email id.
Rgds,
Prakash
04-22-2006 8:49 AM
Hai Raghavendra
GOOD
THERE IS THREE TYPE OF METHOD IN BDC
BDC SESSION
CALL TRANSACTION
CALL DIALOG
What is BDC or batch input
The Batch Input is a SAP technic that allows automating the input in transactions. It lies on a BDC (Batch Data Commands) scenario.
BDC functions:
· BDC_OPEN_GROUP : Opens a session group
· BDC_CLOSE_GROUP : Closes a session
· BDC_INSERT : Insert a BDC scenario in the session
· The ABAP statement "CALL TRANSACTION" is also called to run directly a transaction from its BDC table.
It runs the program RSBDCSUB in order to launch automatically the session. The session management is done through the transaction code SM35.
The object itself is maintanable through the transaction SE24.
BDC methods:
Method
Description
Parameters
OPEN_SESSION
Opens a session
SUBRC (Return Code 0 OK)
SESSIONNAME (Session to be created)
CLOSE_SESSION
Closes a session
None
RESET_BDCDATA
Resets the BDC Internal Table...
None. Normally, for internal purpose
BDC_DYNPRO
Handles a new screen
PROGNAME (Name of the program)
DYNPRONR (Screen Number)
BDC_FIELD
Puts a value on the screen
FIELDNAME (Name of the field)
FIELDVALUE (Value to be passed)
CONSTRUCTOR
Constructor - Initializes NO_DATA
NODATA (No data character). The constructor is called automatically when the object is created.
RUN_SESSION
Launches a session with RSBDCBTC
None
CALL_TRANSACTION
Calls a transaction with the current BDC Data
MODE (Display Mode)
UPDATE (Update Mode)
TCODE (Transaction to be called)
BDC_INSERT
Inserts the BDC scenario in the session
TCODE (Transaction to be called)
BDC techniques used in programs:
1) Building a BDC table and calling a transaction,
2) Building a session and a set of BDC scenarios and keeping the session available in SM35,
3) Building a session and lauching the transaction right after closing the session.
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BDC using Call Transaction
BDC using Call transaction involves calling an SAP transaction in back ground from within the ABAP
program. The process involves building an Internal BDC table containing the screen information needed to
execute the required transaction and then passing this to the Call transaction command (See code example).
The full procedure for creating a BDC program is as follows:
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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
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BATINPUT/DIRECT INPUT
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A: Batch-inputs can not be used to fill the "delivery due list" screen because it is not a dynpro. This is a standard SAP report. A SAP report (check with "System -> Status") may be called using SUBMIT sentence with the appropriate options . It is preferred to call a report than create a Batch-input program.
GO THROUGH THIS LINK
http://www.guidancetech.com/people/holland/sap/abap/zzsni001.htm
Thanks & regards
Sreenivasulu P