Tuning & Testing

Question

Hi,
How to do Performance Tuning, Integration Testing, Unit Testing, Dump Analysis in ABAP?
anybody got screen shots / with example?
Thanks
Seshu

Answer 1

HI ,
Performance Tuning..
1. Check the SELECT STatements
   a. Specify necessary conditions to retrieve the data
   b. Specify all the key fields if known.
   c. Make sure that the tables are not empty when used 
      in SELECT --- FOR ALL ENTRIES.
   d. Always clear/ refresh variables and tables if not 
      required any more in the program.
   e. Use the INTO TABLE instead of INTO CORRESPONDING
      FIELDS OF TABLE in a SELECT statement.
2. Check the Nested Loops in the programs.
3. Avoid SELECT inside LOOPS.
   Instead of using SELECT inside loops...use the
   appropriate JOINS to select records from two or more 
   tables.
4. When using the CONTROLS, optimally use the FLUSH
   Commands.
5. Read the tables by Binary Search Method specifying
   the Keys used for Sorting that table.
6. Use of right kind of Internal tables (Standard,  
   Sorted, and Hash tabes) is very important.
Integration Testing.
It is always good practise test the individual applications thoroughly before going for integration testing. The application accessing all the submodules is tested only when the individual components are working correctly.
Unit Testing.
1. Initially check the coding standards specified by  
   your company/ client.
2. Check the performance tuning techniques specified in
    above.
3. Check the application specific conditions.
4. Check for all the errors and the corresponding error
   handling conitions.
5. Do the negative testing, that enter incorrect data
   to process records.
Regards,
Vara