I just got some questions related to the PRTY command yesterday. May be the following tips are of interest for you too.
The PRTY command is used to query and set partition and dynamic class priorities. You may use PRTY as an Attention Routine command on the console, or as a Job Control command (JCC) in the ASI (Automated System Initialization) procedure of partition BG.
PRTY command tips:
- If VTAM is used, the partition in which it is running should not be specified for partition balancing.
- A VSE/POWER partition (normally F1) should have a higher priority than the POWER-controlled partitions. If you prefer to give VSE/POWER a lower priority, you can do this both for static and dynamic partitions. For static partitions the NPC (no priority check) operand of the PSTART command must be used in this case.
- You can specify only one group of partitions for partition balancing.
- Only dynamic classes that are contained in the active dynamic class table can be specified.
- Continuation lines are accepted. PRTY can be continued in next line (requires C in column 72), next line continues in column 16.
- To set the priority of dynamic classes during the startup (in the ASI procedure) PLOAD DYNC (to load the class table) must be moved before PSTART BG in POWER AUTOSTART procedure (skeleton SKPWSTRT in ICCF lib 59). You may configure certain dynamic classes as DISABLED to avoid that jobs start in dyn. partition instead of static partition.
- PRTY in the BG ASI procedure (e.g. $0JCL - skeleton SKJCL0) must be moved behind start of the POWER partition and STOP statement.
The PRTY command is described in the z/VSE System Control Statements book. That book is on the z/VSE documentation page - here.