On Wed, 2 Sep 2009 10:26:03 +0300, גדי &#1489;ן אבי <[email protected]> wrote:
>Hi, > >Currently, I have no time zone defined. >Is changing the time zone in the STP task a disruptive task? > >TIA > >Gadi > >-----Original Message----- >From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Peter Bishop >Sent: Wednesday, September 02, 2009 9:57 AM >To: [email protected] >Subject: Re: Changing system time when using STP > >On Wed, 2 Sep 2009 09:44:21 +0300, גדי &amp;#1489;ן אבי <[email protected]> wrote: > >>Hi, >> >>A few months ago we replaced our Sysplex Timer (9037-002) with STP. >> >>We have two z890s. Each z890 has a production LPAR and a test LPAR. The >production LPARs form one basic sysplex, and the test LPARs form another >sysplex. >> >>All LPARs are running z/OS 1.9. >> >>The CLOCKxx members look like this: >>OPERATOR NOPROMPT >>TIMEZONE E.00.00.00 >>ETRMODE NO >>ETRZONE NO >>STPMODE YES >>STPZONE YES >>ETRDELTA 1 >> I'm guessing from your CLOCK member that by "none defined" you actually mean you are using a zero TZ offset, i.e. running with TZ=GMT (effectively). I don't have a machine to test it on, but I would presume that a zero offset TZ would act like any other TZ and be transparent to DST changes - ours are at GMT+10 and we certainly do it without any outages (some apps have to wait an hour in the autumn as they're poorly designed). You're not changing the TOD clock, you're only adding or subtracting the DST offset. If you mean you really are running with an uninitialised STP timing network and haven't thus set the time there, which I doubt is what you mean, then yes, it will definitely be disruptive to set the time but I would suggest not much disruption, as in the case the systems aren't really doing much anyway ;-) cheers Peter ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
