In BDC Session method several transactions can be processed together. It actually submit the BDC session to batch processing and wait in the queue. You can view the result via transaction SM35.
There are three functional modules to be called from BDC Program for submitting the transactions for processing: BDC_OPEN, BDC_INSERT and BDC_CLOSE.
The most important aspects of the session method are:
• Asynchronous processing
• Transfer of data for multiple transactions
• Synchronous database update
• Generation of a batch input processing log for each session
• Sessions generation in parallel.
• Opening of a session by batch input program not possible until closure of the preceding session.
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