The File Handler includes tracing file operations that enable you to: 
               
            
 
            
             
               
               - Set tracing on or off using file handler configuration parameters 
                  
               
  
               
               - Set a further level of tracing known as logging, again using file handler configuration parameters 
                  
               
  
               
               - Dynamically turn tracing on or off from your COBOL program, using library routines 
                  
               
  
               
               - Replay a sequence of file handling operations, using 
                  Trace Player