-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of John McKown
Sent: Wednesday, April 01, 2009 12:35 PM
To: [email protected]
Subject: JES2 exit?

<SNIPPAGE>
I don't like doing the above, but management basically wants a rule of
"any
job which will execute more than ... minutes must be scheduled by
Production
Control via CA-7." Of course, a rule without enforcement is not a rule.
It
is a request.
<SNIPPAGE>

So any and all jobs that execute 1 second beyond get cancelled, right? I
can think of two system issues that can cause heartburn. Should the
system have an enque hang, or allocation (as in it being single threaded
for ALL address spaces) get stuck for some reason, all batch jobs
subject to this rule could get "executed."

Now for the busy situation that causes this problem: What happens when
the tape system you have has all its tape heads tied up when a large
data set is needed has been migrated off to tape? Do all the jobs that
are waiting for restores get charged with the wall time it takes to get
their files restored?

Just a few items that management, who may know nothing about how real
processing takes place, may need a small bit of education about.

Regards,
Steve Thompson

-- Opinions expressed by this poster may not be those of poster's
employer. --

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