As an ISV development shop, our needs differ, somewhat. Our DEMO system in
the three-way Sysplex only gets IPL'd if something is being modified or
upgraded or if some kind of POR is required. The developer's TEST system
follows the same schedule except when they do something that hangs or kills
things and an IPL is necessary. Doesn't happen too often but they have
found some unique ways to do it. My sandbox system gets IPL'd whenever I
need it, usually once or twice a week.
A standing "rule" for our SE's is to let us know if they will need the DEMO
system at a particular time so I don't pull the plug at an inopportune time.
I'm three weeks into my last Sysplex-wide IPL with no need to plan any for a
while. The only "scheduled" IPL's are during the time changes and the IMS's
are the only seriously affected systems.
Kent
Kent Ramsay
Senior System Programmer, SRDC
P 425.564.9735 | F 425.564.9701
www.webMethods.com
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of Steve Arnett
Sent: Thursday, June 23, 2005 9:41 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: IPL periodicity
We process for two hospital systems. One on eastern time and one on central
time. The different departments in hospitals use the computer at different
times, with E/R having priority over any changes that we wish to perform.
What we have found is that a midweek IPL in the evening usually works best
for us. We have a standing schedule to IPL once a month. The last IPL was
in February. For one reason or another, the IPL has been bypassed for four
months. The only fallout from this has been that our system changes are
accumulating and we ran into fragmented storage in the initiators(second
time in two years). We corrected the latter with new Control-O rules to
cycle the inits monthly. The system changes simply have to slide from month
to month until we can actually implement them with an IPL.
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