Mastering Debugging Techniques: From Breakpoints to Watchpoints

 

• Debugging is a technique by which we can find the error, Correct the error and detect the error.
• Always prefer Desktop 3, as it provides more space to see the data more clearly.

Ways of Debugging :-

1. Put the breakpoint on any executable statement and program will automatically stop at that point.

   
   
   

   
   

   • Any statement that perform some execution is term as executable statement.

   • Note :- The program must be in active state to put a break point on it.

     
     
     

     
     

2. We can debug the code with the help of transaction code /h.

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Execution keys in Debugging :-

1. F5 - Step by Step Execution: Executes the program one line at a time, allowing you to step through each line of code, including stepping into function calls for detailed inspection.
2. F6 - Line by Line Execution: Similar to F5 but skips over function calls, executing only the current line of code and moving to the next line.
3. F7 - Return: Steps out of the current function, allowing you to quickly return to the calling function's context.
4. F8 - Continuous Execution or Exit: Resumes continuous execution of the program until the next breakpoint is encountered or until the program completes. Can also be used to exit debugging mode.

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System Variables in Debugging Mode :-

• SY-SUBRC and SY-TABIX system variables are by default present in the debugging mode.

• In SY-SUBRC, RC stands for return code

  • If SY-SUBRC = 0 { Operation Successful }
  • If SY-TABIX = 0 {Operation Unsuccessful }

• SY-TABIX :- It always works inside the loop and gives us the index of the row i.e. if first row is inside the loop, then SY-TABIX = 1 and so on.

  
  
  

  
  

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Static and Dynamic Breakpoint in Debugging :-

• Static breakpoints are user independent break - points , that means they are not dependent on users.

  • For, example :- Suppose, There are two users :- User 1 and User2 . So, If User 1 will put a static break point, then User 2 will also go into debugging mode.

  Syntax :-

  • BREAK-POINT.

• Dynamic breakpoints are user dependent breakpoints, they do not affect other users.

  Syntax :-

  • BREAK - User name

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Various Features in Debugging Mode for Internal Tables :-

• Change the contents of selected rows.

  
  
  

  
  

• Delete Selected rows.

• Delete all rows ( Delete complete table ).

  
  
  

  
  

• Append Row.

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Deleting and Deactivating Breakpoints :-

1. Deactivating Breakpoint :-

• It is to temporary deleting the break-points in that particular session and when the program again runs, the breakpoints will be there.

  
  
  

  
  

2. Deleting Break-Point :-

• Permanently deleting the break-points.

  
  
  

  
  

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Watchpoint :-

• A watchpoint is used to monitor the values of variables and Internal tables, Work areas etc.

  
  
  

  
  

  • Click on watchpoint.
  
  
  

  
  

  • Provide the variable on which you want to put the watchpoint.
  
  
  

  
  

  • When data will change in the internal table, you will get a notification.

    
    
    

    
    

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