> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Dazzo, Matt > Sent: Monday, November 21, 2011 2:13 PM > To: IBM-MAIN@bama.ua.edu > Subject: Set Clock Command > > We are a monplex environment with the SE clock set to locale > time, we run DB2, CICS and DASD XCF dataset. Our current > procedure for time change is to shutdown MVS, change the SE > clock and IPL. Clock=00 member has no off set and has been > set up like this since the beginning of time. > > I have been looking at the set clock command in hopes of > maybe eliminating the IPL. From reading the good old book I > think I have to do the following. Anything else I am missing > or should be aware of? How does the DASD XCF dataset handle > the time change when going back 1 hr? Thanks Matt > > 1.Set the SE clock to GMT > 2. Change the TIMEZONE to -5 for EST
DASD XCF is unaffected by the SET TIMEZONE or SET CLOCK commands. It uses the TOD clock internally (aka "GMT time"). DB2 also uses this clock. CICS is a bit trickier because you must first issue the T CLOCK= or T TIMEZONE=, then for each CICS region, issue the command: CEMT PER RESET. We do this using the MODIFY command to each CICS region. We have the z/OS consoles setup as CICS terminals so that we can do this. If all your CICS regions start with the same "prefix", then your modify can looks something like: F CICS*,CEMT PER RESET. z/OS will issue a MODIFY command against every executing address space which begins with CICS for you. Handy if you have a decent naming convention. -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * john.mck...@healthmarkets.com * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
