Jobs remain in the job scheduler between OS releases.
Perhaps the best way is to do a CHGIPLA, and start the system up restricted. This way you only have the console up and you can do what you need after the upgrade (Like Apply PTFs, or do a full backup before returning the system to the users). I wrote an article last month in my System admin Tips and Techniques newsletter on just this: http://www.itechsol.com/newsletters/2014-02.html
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Tuesday, March 18, 2014 2:57 PM
To: 'Midrange Systems Technical Discussion'
Subject: V6R1 to V7R1 i5/OS upgrade questions
1) Can future scheduled jobs remain in the jobq across a V6R1 to V7R1 i5/OS upgrade?
2) Is the simplest way to prevent AJS (Advanced Job Scheduler) jobs from running during or after the upgrade is to hold or end the AJS monitor as opposed to holding or omitting next run of individual jobs?
IBM i Systems Administrator
Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071
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