OK, I would like to add my $0.02 to this thread.
 
<soapbox>
 
You may want to consider the old adage of "be careful what you ask for, you
may get it" may apply to this topic.
 
Consider if you will, something happened to z/OS that was sever enough to
cause a wait state and/or stand-alone dump to occur, what are the chances
that the system can be safely restarted without some investigation into the
matter.
My personal opinion is that z/OS is fairly bullet-proof and if something has
caused z/OS to throw its hands up in the air, maybe someone should look into
it first before trying to re-IPL.
 
There is a similar option in z/VM-land on the SHUTDOWN command to REIPL the
system automatically once the SHUTDOWN processing has completed. I have used
this REIPL option on the SHUTDOWN command several times when I wanted to
make some configuration change(s) only to discover that I caused a problem
for myself by overlooking one thing or another. The software did what I told
it to, but it was not smart enough to recover from my error. I have lost
spool files and named saved systems by doing this only because another copy
of a z/VM system volume was discovered during the IPL and this system's IPL
was not using the correct set of volumes. Like I said, this was my error and
not z/VM's. 

What if z/OS and JES2 decided to do a cold start on your auto re-IPL or
found the wrong copy of a system volume, PARMLIB, etc.?
 
</soapbox>


HITACHI 
 DATA SYSTEMS

Raymond E. Noal
Lab Manager, San Diego Facility
Office: (858) 537 - 3268
Cell:   (858) 248 - 1172



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