Zoom Screen

The Zoom screen is very similar to the Job Scheduling Definition screen.  Instead of displaying the permanently defined job scheduling definition, however, the Zoom screen displays the job scheduling definition of the requested job order.

In the Zoom screen, you can change or delete TIME FROM and TIME UNTIL criteria for a job order. You can now display the Zoom screen, which is requested from the Active Environment screen.

1. Exit the Why screen.

   The Active Environment screen is displayed. Note the Z (Zoom) option at the bottom of the Active Environment screen. This option displays the Zoom screen.

   You will recall from Chapter 2, "Scheduling Definition and Manual Intervention," that before you could delete a job from the Active Environment screen, you had to place the job in Held status. To make changes through the Zoom screen, you must first hold the job in the Active Environment screen, and then enter the Zoom screen.

2. Enter option H for IDJOB3. Press Enter several times until the status of the job is changed to Held Wait Schedule.
3. Enter option Z for IDJOB3.

   The Zoom screen is displayed.

   Figure 33 Zoom Screen

----------------------------- CONTROL-M ZOOM SCREEN ----------------------(3.Z)

COMMAND ===>                                                    SCROLL===> CRSR

+-----------------------------------------------------------------------------+

  MEMNAME IDJOB3      MEMLIB   CTM.TEST.JCL                                  

  OWNER   ID          TASKTYPE JOB              PREVENT-NCT2   DFLT- N       

  SCHDTAB IDGS1       SCHDLIB  CTM.TEST.SCHEDULE                            

  APPL                                          GROUP                        

  OVERLIB                                                   STAT CAL         

  SCHENV                         SYSTEM ID                  NJE NODE         

  JOBNAME           JOBID          ODATE 020201 ORDERID 001QO      MAXWAIT 05

  RESTART DECISION-FROM          .          TO          .          CONFIRM N

  DESC    FISCAL RESULTS ON LAST FRIDAY OF MONTH                            

  SET VAR                                                                    

  CTB STEP AT         NAME            TYPE                                   

  DOCMEM  IDJOB3      DOCLIB                                                 

  ===========================================================================

  IN           IDJOB3-ENDED-OK      0202                                     

  CONTROL                                                                    

  RESOURCE IDTAPE-DRIVE         0001      IDCPOWER             0005          

  PIPE                                                                      

  FROM TIME 2300    +     DAYS    UNTIL TIME 0400 +     DAYS  

  DUE OUT TIME 1159 +     DAYS    PRIORITY *5  SAC    CONFIRM N

  TIME ZONE:                                                 

COMMANDS:  SAVE  DOC  NOTE                                           12.54.56

There are differences between the permanent definition displayed in the Job Scheduling Definition screen, and the job order definition displayed in the Zoom screen. For example, the definition in the Zoom screen does not display Basic scheduling parameters—these parameters are irrelevant once the job order is in the Active Environment. And the Zoom screen displays parameters such as SEARCH COUNTER, which are not found in the job scheduling definition, but which are relevant to the job order processing and have values set by Control-M.

The runtime scheduling parameters you defined for IDJOB3 appear in the Zoom screen.

  ===========================================================================

  IN           IDJOB3-ENDED-OK      0202                                     

  RESOURCE IDTAPE-DRIVE         0001      IDCPOWER             0005          

  PIPE                                                                      

  FROM TIME 2300    +     DAYS    UNTIL TIME 0400 +     DAYS  

  DUE OUT TIME 1159 +     DAYS    PRIORITY *5  SAC    CONFIRM N

  TIME ZONE:                    WAIT FOR ODATE:                              

  CPU-ID    NODE NAME           NJE      SEARCH COUNTER 00000                

  ===========================================================================

Of the runtime scheduling criteria you defined, the TIME FROM and TIME UNTIL range remains the only problem. You can resolve this by simply changing the TIME values in the Zoom screen.

1. Change TIME FROM to a value that is an hour earlier than your current system time. Change the UNTIL value to a time that is several hours after the current system time.

   At this point, it is important that you note the following:

   • Any change to a job order in the Zoom screen changes the value for that job order only. The permanent definition that you defined in the Job Scheduling Definition screen remains unchanged.
   • Instead of using the Control-M Why and IOA Conditions/Resources screens to satisfy the other runtime parameters, you could have deleted those parameters from the job order in the Zoom screen.
   • The most important thing to remember is that in actual production circumstances, you do not merely delete parameter values that "get in the way," and you do not intervene in the job control process unless you are fully aware of the potential impact of that intervention.

     These exercises are designed to show you the workings of scheduling parameters and to show you how you can intervene if absolutely necessary. But runtime criteria are defined for a reason, and unless you are certain of what you are doing, intervention can do much more harm than good. For example, intervening to cause the submission of a job before its predecessor job has run can potentially do great damage.

     Therefore, intervention in job processing should be left only to those who are specifically authorized and who have the knowledge necessary to intervene appropriately.

   You can now exit the Zoom screen and see the result.

2. Enter SAVE in the COMMAND field of the Zoom screen. The Active environment screen is displayed.