Interview Questions On Bdc In Sap Abap
Interview Questions on Batch Data Communication (BDC) in SAP ABAP
Interview Questions On Bdc In Sap Abap
During an interview for a SAP ABAP development role involving Batch Data Communication (BDC), you may be asked about your experience with BDC concepts and processes. Expect questions on different methods of BDC such as call transaction method and session method, their advantages and disadvantages, error handling techniques, and ways to optimize BDC performance. You might also be quizzed on how to handle BDC recording, data conversion, and the differences between BDC and LSMW (Legacy System Migration Workbench) in SAP. Additionally, be prepared to discuss your troubleshooting skills in identifying and resolving issues that may arise during BDC processing.
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1 - What is BDC in SAP ABAP?
BDC stands for Batch Data Communication. It is a technique in SAP ABAP that allows you to transfer high volumes of data from non SAP systems to SAP or from one SAP system to another.
2) What are the types of BDC in SAP ABAP?
There are two types of BDC in SAP ABAP: Call Transaction method and Session method.
3) Explain the Call Transaction method in BDC.
The Call Transaction method in BDC is a synchronous process where the data is transferred to SAP and immediately processed in the same session. If an error occurs during processing, the transaction is immediately rolled back.
4) What is the Session method in BDC?
The Session method in BDC is an asynchronous process where the data is first recorded in a session and then processed separately in the background. It allows for the processing of large volumes of data without user intervention.
5) What are the components required for BDC programming?
The components required for BDC programming are the BDC Data, BDC Structure, and BDC Program.
6) What are the different methods of data transfer in BDC?
The different methods of data transfer in BDC are Direct Input method, BAPI (Business Application Programming Interface) method, and IDoc (Intermediate Document) method.
7) How do you handle errors in BDC programming?
Errors in BDC programming can be handled using error handling techniques such as MESSAGE statement, SY MSGID, SY MSGTY, SY MSGNO system fields, and using error logs for debugging.
8) Can you explain the difference between ‘BDC_OKCODE’ and ‘BDC_CURSOR’ in BDC programming?
‘BDC_OKCODE’ is used to pass function codes like SAVE, BACK, etc., to simulate user actions, whereas ‘BDC_CURSOR’ is used to position the cursor on a particular field in the screen.
9) What is the significance of the ‘CALL TRANSACTION’ statement in BDC programming?
The ‘CALL TRANSACTION’ statement is used to process the data in the BDC Data using the Call Transaction method in SAP ABAP.
10) How do you create a BDC session in SAP ABAP?
To create a BDC session in SAP ABAP, you can use the BDC session method by recording the data in a session using the ‘BDC_OPEN_GROUP’, ‘BDC_INSERT’, and ‘BDC_CLOSE_GROUP’ function modules.
11) Can you explain the difference between ‘CALL TRANSACTION’ and ‘SESSION’ methods in BDC?
The ‘CALL TRANSACTION’ method is synchronous, while the ‘SESSION’ method is asynchronous. The ‘CALL TRANSACTION’ method processes data immediately in the same session, whereas the ‘SESSION’ method records data in a session for background processing.
12) What are the common challenges faced in BDC programming, and how do you overcome them?
Common challenges in BDC programming include handling errors, managing large data volumes, and ensuring data accuracy. You can overcome these challenges by implementing proper error handling mechanisms, optimizing data processing logic, and performing thorough testing before deployment.
13) How do you test a BDC program in SAP ABAP?
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You can test a BDC program in SAP ABAP by creating test data, executing the BDC program in a test environment, analyzing the results for errors, and validating the data integrity after processing.
14) Explain the difference between recording mode A and E in BDC session method.
In BDC session method, recording mode ‘A’ allows you to record data with absolute screen positions, while recording mode ‘E’ allows you to record data with relative screen positions. Recording mode ‘A’ is more precise but may be less flexible, while recording mode ‘E’ is more adaptable to changes in screen layouts.
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