• Subject: Re: Time change.
  • From: "Bill Meecham" <wm@xxxxxxxxx>
  • Date: Thu, 28 Oct 1999 12:56:36 -0400
  • Organization: Extol Inc

I enter a job schedule entry for 2am on sunday morning that will run this
code.  This is some very basic code that will change the time forward or
backward based on the time of the year it's run.  I offer no gaurentees.
This is offered as my opinion only and it is not the recommendation of me or
any of my employers.  I don't suggest that you run this code, this is just
an example of code that would change the time on the AS400 that it run on.
If you're not sure, check with someone who is familiar with your environment
before making this change.  In any case, don't do this on your own!

As someone else mentioned, you should adjust the UTC offset system value.
You could add that change to this routine.


             PGM

             DCL        VAR(&TIMEN) TYPE(*DEC ) LEN(6 0)
             DCL        VAR(&MONTHN) TYPE(*DEC ) LEN(2 0)
             DCL        VAR(&TIMEC) TYPE(*CHAR) LEN(6)
             DCL        VAR(&MONTHC) TYPE(*CHAR) LEN(2)
/*assuming the month is set correctly */
             RTVSYSVAL  SYSVAL(QMONTH) RTNVAR(&MONTHC)
             CHGVAR     VAR(&MONTHN) VALUE(&MONTHC)
/*assuming the time is correct now*/
             RTVSYSVAL  SYSVAL(QTIME) RTNVAR(&TIMEC) /**/
             CHGVAR     VAR(&TIMEN) VALUE(&TIMEC)
/* SPRING AHEAD /**/
             IF         COND(&MONTHN < 6) THEN(CHGVAR VAR(&TIMEN) +
                          VALUE( &timeN + 10000 ))
/* FALL BACK    /**/
             IF         COND(&MONTHN > 6) THEN(CHGVAR VAR(&TIMEN) +
                          VALUE( &timeN - 10000 ))
/*get ready to change */
             CHGVAR     VAR(&TIMEC) VALUE(&TIMEN)
/* actual change  /**/
              CHGSYSVAL  SYSVAL(QTIME) VALUE(&TIMEC)     /**/
/* get out */
             RETURN
             ENDPGM



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