Chagne the timezone

A number of years ago we moved out LPARs to the parent companies systems but essentially left everything about the system the same, including the time zone. It is currently running in Eastern but we're switching to Central. Looking at the system, I have QTIMZON set to -05:00 Eastern Standard Time EST and the QUTOFFSET set to -05:00 as well. My plan to implement this change is as follows:

ENDSBS *ALL to restricted state
Change QTIMEZON system value from QN500EST3 to QN0600CST3, which will change QUTOFFSET.
Immediately do a PWRDWNSYS with Restart *NO
Wait a bit more than an hour and then have Operations IPL the partition.

Why the wait? I want to limit the chance of getting any application fall out from having, say a file keyed on Date/Time cause a problem. Also, could get wonky looking at the logs if this are co-mingled.

Anyone do this and see something I'm not thinking of? No something ya do every day but it sounds fairly straight forward. I realize my system has the auto adjust for day light savings time that is essentially doing the same thing but that's system processed instead of a systems programmer in the wee hours of the morning, hitting an unexpected command.

Perhaps I'm over thinking this. :)


Michael Smith
Systems Manager - iSeries Support, SAP Basis Administration and Technical Support (D.R., Open Systems Storage and Mainframe Storage)
CTS - Corporate Technical Services
E : Michael_Smith@xxxxxxxxxxxxxx<mailto:Michael_Smith@xxxxxxxxxxxxxx>
Business Hours : M - F : 8:00 - 4:30 EST


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