Helio,
I know the command $HQ was used once
To keep jobs in specified job queues or all job queues from being
executed until you either issue a $AQ command or restart JES2.
I think IBM started to change the $HQ to $HA around os/390 v1.1 0 with the
command $HQ no longer documented around os/390 V2.4 (activated JES2). After
that, the $HQ was replaced by several different commands. The command $HA
provided more flexibility for holding parts of JES2 based on Converter,
INPUT, Output, member in mas, Sysplex mas, etc...
The following commands could be used together or independently to do what
you want. Everything will be dependent on what actions you want to take
now.
The $PXEQ will halt WLM inits from selecting work. You can see if it is in
effect with a $DMEMBER command.
The $ZI command will halt initiators. Depending on the init structure, you
could halt individual inits that contain the classes you want quiesce.
The $HJQ command will halt specific jobs based on characteristics.
And the last one $HA will halt all jobs based on affinity for a member, all
jobs whose affinities include the specific member, or all jobs within an
entire MAS configuration.
So, everything depends on what you want to do with halting your environment.
By init class, by member in a MAS or by specific types of jobs (INPUT,
CONVERTER, etc...)
Hope this helps.
Lizette Koehler
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