COBOL Advanced Demo Session › Option 02: Limit CICS Storage and Requests

Option 02: Limit CICS Storage and Requests

This section of the demo session shows how to limit CICS main storage and CICS requests for a specific program (the demo program).

Two CA InterTest for CICS options are detailed in this part of the demo session:

• The MXS option limits the amount of main storage obtained by a task. This option is useful in detecting program errors that cause a task to acquire an excessive amount of storage.
• The MXR option limits the number of CICS requests, commands and macros that a program can issue. This option is useful in detecting program loops that generate an excessive number of CICS requests.

Note: Before proceeding, be sure you have completed the steps outlined in the Demo Preliminaries section, and that you have the CA InterTest Demo Session Options Menu displayed on your screen.

1. Select option 02, and press Enter.

   The demo program displays a screen that describes what occurs in this part of the demo session.

       **********************************************************************      
       ****                                                              ****      
       ****                  CA InterTest Demo Session                   ****      
       ****          MXR Option ‑ Limit Number of CICS Requests          ****      
       ****          MXS Option ‑ Limit Amount of CICS Storage           ****      
       ****                                                              ****      
       **********************************************************************      
                                                                                   
       The program has a loop containing a CICS request and another loop           
   
       containing a GETMAIN request. Here is what will happen:                     
                                                                                   
       1. The program is halted at an unconditional breakpoint before the loops.  
       2. You set the MXS and MXR options to limit storage and CICS requests.     
       3. The program continues to execute.                                       
       4. CA InterTest halts the program at automatic breakpoints when the         
          limits are exceeded.                                                    
       5. You remove the options and the program completes execution.             
                                                                                   
                                                                                   
                                                                                   
       When this section of the demo completes, you will return to the             
       Options Menu.                                                              
                                                                                   
                 Press ENTER to continue or CLEAR to terminate.
   

2. Press Enter.

   CA InterTest for CICS halts the program at the procedure name LOOP‑RTN (because you set an unconditional breakpoint there as part of the Demo Preliminaries). Because a procedure name does not have executable code, the breakpoint you set halts execution before the first verb in the paragraph.

   In this case, CA InterTest for CICS halts the demo program at the highlighted PERFORM command. Now you can access the Special Options menu to set the options you need for testing.