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Lund Performance Solutions


Concurrent Job Limiting
Chapter 5 explains how to configure concurrent job limiting on your MPE system through Q- Xcelerator. Sections contained in Chapter 5 include:
A feature of Q-Xcelerator is the ability to limit the number of occurrences of a particular job (or group of jobs) that can run concurrently on the system.

Adding a Concurrent Job Group

To create a concurrent job group:
  • From the Main Menu, select Concurrent Job Maintenance (SUBMENU).


  • Figure 5.1 Q-Xcelerator Concurrent Job Maintenance Submenu screen
    The Concurrent Job Maintenance Submenu screen will display the following options:
  • Add creates a concurrent job group.
  • Change modifies an existing concurrent job group.
  • Delete removes an existing concurrent job group definition.
  • Show lists all of the concurrent job groups configured.
  • Ignore causes the Q-Xcelerator monitor job to ignore the concurrent job group.
  • Recognize is the converse of the Ignore option.
  • Exit leaves the Concurrent Job Maintenance Submenu.
  • Select Add. The Add Concurrent Job Definition screen displays.
  • Specify the following parameters for the new job group:
  • Concurrent Job Definition
  • A user-defined, 16-character, free-form text name for the concurrent job group (required). The default is @.@ (all user accounts).
  • Logon ID
  • A field used to specify the logon ID. The format is Session, User.Account, Group. In this format, User.Account is required.
  • Concurrent Job Limit
  • The number of jobs in this group allowed to run simultaneously. Valid entries are from 0 through 9999. The default value is 0.
  • Respond the prompt with Y (Yes) to save the new job group definition to memory. Any other key will abort the addition of this entry.
  • Changing a Concurrent Job Group Definition

    To change a previously defined concurrent job group definition:
  • From the Main Menu, select Concurrent Job Maintenance (SUBMENU).
  • Select Change. The Change Concurrent Job Group Definitions screen displays.
  • Type in the exact name of the job group. Information about that job group is displayed.


  • Figure 5.2 Q-Xcelerator Change Concurrent Job Group Definitions screen (example)
  • Change one or more of the job group parameters. (Move to next parameter by pressing the Enter key.)
  • To save changes to the record, enter Y (Yes). If you decide to keep the original definition, reply N (No).
  • Deleting a Concurrent Job Group Definition

    To delete a previously defined job group:
  • From the Main Menu, select Concurrent Job Maintenance (SUBMENU).
  • Select Delete. The Delete Concurrent Job Group Definitions screen displays.
  • Type in the exact name of the job group. Information about that job group displays.
  • Enter Y (Yes) to delete the record from memory. If you decide to keep the definition, reply N (No).
  • Showing a Concurrent Job Group Definition

    To show a list of all subqueue definitions:
  • From the Main Menu, select Concurrent Job Maintenance (SUBMENU).
  • Select Show. The Concurrent Job Definition List screen displays.


  • Figure 5.3 Q-Xcelerator Concurrent Job Definition List screen (example)
  • To return to the Concurrent Job Maintenance Submenu, press any key.
  • To return to the Main Menu, select Exit Submenu. Save changes, if desired.

  • NOTE Concurrent job limiting may be used even if no queue changes are desired.


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