Q: Does the MVS operator command RESET jobname,QUIESCE still allow a non-swappable address space to be dispatched?
A: Yes. The RESET QUIESCE command swaps out a swappable address space, and gives a non-swappable address space the lowest dispatching priority. This means non-swappable work can still get dispatched if no other work is ready to be dispatched.

Q: When I switch to a new WLM policy, how long does this disrupt the currently executing workload while WLM accumulates new history?
A: The disruption is usually on the order of a few minutes or less.
OS/390 V2.4 reduces the impact of a policy switch by resetting history for only the service classes directly affected by the policy change. For example, if a policy switch only changes the response time goal for service class CICSHIGH, only the history for CICSHIGH is reset. All other service classes are unaffected.

Q: When I cancel discretionary work, I have sometimes had to reset it to a better service class to get the cancel to complete. Is this the right way to do this?
A: Yes. The CANCEL command requires the address space to be swapped in. If the system is busy and discretionary work gets swapped out for long periods, the RESET command is an effective way to get it swapped in more quickly for a cancel.