It isn't the operating system that has the problem. It is the poorly written application programs which do not use the GMT time for their time stamps in whatever data records they are recording. Instead, way back when, they decided to use LOCAL time and then do computations on that LOCAL time field against CURRENT LOCAL time which gets them into trouble during the FALL BACK time change.
DB2 uses the GMT Time to stamp the LOG records it is recording for recovery so that is not an issue. SMF records have GMT Time in them so that is not an issue. No it is the wonderfully written, old legacy applications which are at the root of the problem. ___________________________________________ Jim Petersen MVS - Lead Systems Engineer Home Depot Technology Center 1300 Park Center Drive, Austin, TX 78753 www.homedepot.com email:jim_peter...@homedepot.com 512-977-2615 direct 512-977-2930 fax 210-859-9887 cell phone -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Chase, John Sent: Tuesday, March 29, 2011 5:32 AM To: IBM-MAIN@bama.ua.edu Subject: Re: Summer Time, "state of art" > -----Original Message----- > From: IBM Mainframe Discussion List On Behalf Of Beesley, Paul > > In spring, we use the SET TIMEZONE=E.01.00 command on most of the > systems we support, unless they haven't been IPL'ed for a while. However > in the autumn we still shutdown, wait an hour, and IPL. > If you run 24x7 CICS, make sure it's setup to cope with the time change > ( I forget the SIT parameter ). I'm amazed and mystified that the arguably most sophisticated and mature operating system in the world still cannot automatically handle the changes to and from Daylight Saving Time. -jc- ---------------------------------------------------------------------- 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 The information in this Internet Email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this Email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this Email are subject to the terms and conditions expressed in any applicable governing The Home Depot terms of business or client engagement letter. The Home Depot disclaims all responsibility and liability for the accuracy and content of this attachment and for any damages or losses arising from any inaccuracies, errors, viruses, e.g., worms, trojan horses, etc., or other items of a destructive nature, which may be contained in this attachment and shall not be liable for direct, indirect, consequential or special damages in connection with this e-mail message ! or its attachment. ---------------------------------------------------------------------- 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
