We have our z9 set to GMT/UCT. We code the necessary Timezone_definition and Timezone_boundary statements in SYSTEM CONFIG. You can code Timezone_boundary statements for many years ahead. We don't define anything in the VSE guests.
On Sunday morning, we bring down all our VSE's, and VMs. We wait 1 hour to avoid any double timestamps in logs and files and databases. Then we restart everything. When VM is IPL'ed (and only then) it selects the correct timezone from SYSTEM CONFIG Timezone definitions. The VSE guests then automatically use the same timezone as VM. Depending on your setup you could keep VM running and issue a SET TIMEZONE command, but we think it's safer to just stop VM during 1 hour. It's also a good excuse to have the z9 for ourselves for a while and do all those changes that have been waiting to go into production... Geert. -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Frank M. Ramaekers Sent: dinsdag 13 oktober 2009 15:35 To: IBMVM@LISTSERV.UARK.EDU Subject: Daylight Saving Time change How do you accomplish this change? (Especially with guests O/S's, like VSE, and timing related service machines, like VMUTIL). Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76710 _____________________________________________________ This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at privacy...@ailife.com. DISCLAIMER This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify postmas...@vanbreda.be This footnote also confirms that this email has been checked for the presence of viruses. Informatica J.Van Breda & Co NV BTW BE 0427 908 174
