You got it. The XCF couple dataset uses the stamp from the GMT clock. Instead of SET CLOCK= twice a year, you would issue SET TIMEZONE twice a year .
Check the fine manuals for details on SET TIMEZONE. The TIMEZONE value should also be set in CLOCKxx. Since resetting the hardware clock will require a Power On Reset, there is no additional impact. Of course, you can eliminate the HW clock/Power On Reset by fudging the TIMEZONE values. NOTE: The XCF couple dataset cannot handle the back time change. It "remembers" the last time it was used and will fail the IPL if the timestamps are not in ascending sequence. I would allocate a new set of XCF couple datasets and IPL with those (or wait 5 hours for the IPL). After IPL, you can dynamically migrate back to the original files if desired. HTH, <snip> 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 </snip> ---------------------------------------------------------------------- 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

