Scheduling priority parameters (JOBPTY, OUTPTY, PTYLMT)

The scheduling priority parameters specify the priority values used by the system to determine the order in which the jobs and spooled files are selected for processing. Each job is given a scheduling priority that is used for both job selection and spooled file output. The job scheduling priority is specified by the JOBPTY parameter in commands like the Batch Job (BCHJOB), Submit Job (SBMJOB), Create Job Description (CRTJOBD), and Change Job Description (CHGJOBD) commands. The priority for producing the spooled output from a job is specified by the OUTPTY parameter in the same commands.

In addition, because every job is processed under a specific user profile, the priority for jobs can be limited by the PTYLMT parameter specified on the Create User Profile (CRTUSRPRF) and Change User Profile (CHGUSRPRF) commands. This parameter value controls the maximum job scheduling priority and output priority that any job running under a user profile can have; that is, the priority specified in the JOBPTY and OUTPTY parameters of any job command cannot exceed the priority specified in the PTYLMT parameter for that user profile. The scheduling priority is used to determine the order in which jobs are selected for processing and is not related to the process priority specified in the class object.

The three scheduling priority parameters specify the following:

• The PTYLMT parameter specifies the highest scheduling priority for any job that you submit. In the commands that affect the user profile, the PTYLMT parameter specifies the highest priority that can be specified in another JOBPTY parameter on commands relating to each specific job. You can specify a lower priority for a job on the command used to submit the job. If you specify a higher priority for JOBPTY in the BCHJOB or SBMJOB command than is specified for PTYLMT in the associated user profile, an error message is shown on the display and the maximum priority specified in PTYLMT is assumed. If a higher job priority is specified in the CHGJOB or CHGJOBD command, an error message is shown and the attributes are not changed.
• The JOBPTY parameter specifies the priority value to be used for a specific job being submitted. In the commands relating to a specific job being submitted, the JOBPTY parameter specifies the actual scheduling priority for the job.
• The OUTPTY parameter specifies the priority for producing the output from all spooled output files from the job. The priority value specified in the OUTPTY parameter determines the order in which spooled files are handled for output. The same value is applied to all the spooled files produced by the job.

The scheduling priority can have a value ranging from 0 through 9, where 1 is the highest priority and 9 is the lowest priority. Any job with a priority of 0 is scheduled for processing before all other jobs that are waiting and that have priorities of 1 through 9.

The priority parameters can be specified on the following commands.

JOBPTY    OUTPTY    PTYLMT
 
ADDJOBJS  ADDJOBJS
BCHJOB    BCHJOB    CHGUSRPRF
CHGJOB    CHGDKTF   CRTUSRPRF
CHGJOBD   CHGJOBD
CHGJOBJS  CHGJOBJS
CRTJOBD   CHGJOB    RTVUSRPRF
SBMJOB    CHGJOBD
SBMJOBJS  CHGJOBJS
          CHGPJ
          CHGPRTF
          CHGSPLFA
          CRTDKTF
          CRTJOBD
          CRTPRTF
          OVRDKTF
          OVRPRTF
          SBMJOB
          SBMJOBJS

Values allowed

Depending upon the command, one or more of the following values apply to the parameter.

5: If a value is not specified in the CRTUSRPRF command, five is the default value that is assumed for the priority limit for the user profile. That would be the highest priority that the user could specify for any job he submits for processing. If not specified in the CRTJOBD command, five is the default value for both the job scheduling priority and the output priority.

*SAME: The priority assigned, or the highest priority that can be assigned, does not change.

*JOBD: The scheduling priority for the job is obtained from the job description under which the job runs.

scheduling-priority: Specify a priority value ranging from 0 through 9, where 0 is the highest priority and 9 is the lowest priority. Priority 0 is allowed only on CHGJOB.