Answer / jenny

Norty_n,
call transaction method can also be processed in the
background by mentioning the mode as 'N' in the syntax below
"CALL TRANSACTION 'MM01' USING BDCDATA MODE N UPDATE A
MESSAGE INTO MESSTAB".

Below are the difference between call transaction and
session method.

Session method Call transaction
1. Transfers data for multiple 1. Transfers data for
transactions. single transaction.
2. errog log is created by 2. errors need to be
default. handles explicitly.
3. processing is slower. 3. processing is faster
4. can transfer large amount of 4. Can transfer small
data. amount of data.
5. Data is not updated until 5. data is updated
session is processed. automatically.

Thanks
Jenny

Answer / norty_n

Session method:
...It can handle small amount of data as well as large
amount of data.
...It can handle multiple applications simultaneously.
...This method by default has log files. Log files is used
to store error records.
...It can process the data fore ground and back ground
because it can handle small amount of data as well as large
amount of data.
...It processes the database Asynchronously and updates the
database synchronously.

Call-transaction Method:
...With this method we can process the data in fore ground
only.
...This method compatible small amount of data only. user
can create log file explicitly using BDCMSGCOLL structure.
...It processes the data and updates synchronously.
...It can handle one application at a time.


Cheers..
MNK

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