System Tasks › Using System Tasks › How to Invoke System Tasks

How to Invoke System Tasks

You invoke a system task by entering the task code for the task. For example, SIGNON, BYE, and DCUF are all task codes for system tasks. You enter the task code for a system task while using DC/UCF, in response to the prompt issued by DC/UCF.

In the following example, user LRB signs on to DC/UCF SYSTEM55:

Vnnn ENTER NEXT TASK CODE:      CA IDMS release nn.n tape volser node nodename
  signon lrb

Task codes defined at system generation

Task codes for system tasks are defined at system generation time and can vary from site to site. Users can invoke a system task only when they have execute authority for the security categories assigned to the task and all of the related programs.

Note: For more information about the TASK and PROGRAM statements used to define system tasks, see the System Generation Guide.

Task Code Specification Rules

The following rules apply when entering system task codes in the TP-monitor command line:

• One system task code can only be entered at a time.
• The task code must be separated from command keywords (if any) by one or more blanks.

Keyword abbreviations

When a system task provides keywords, you can enter full or abbreviated keywords along with the system task's task code. For example, each of the following DCMT DISPLAY TASKS commands is valid:

dcmt    display ta
dcmt d tasks
dcmt  d ta

Note: Valid abbreviations for command keywords are shown in the syntax diagrams for the individual commands. Capitalized letters in the syntax diagrams must be entered; lower case letters are optional.