I remember back when a very fundamental utility changed to SDB by default. I believe it was IEBGENER itself. If we had HOLDDATA back then, I'm not sure how big a deal we made of it. In any case, one major application had an 'outage' because a particular job step had been counting on the historic default where output blocksize was equal to input blocksize. Their master file was required to be a certain blocksize. For years the offending utility step copied the file without specifying blocksize. Suddenly with SDB the output changed, and subsequent steps failed.
I once had to explain to the author of a very silly CLIST why it suddenly failed to enter an expected (!) ERROR routine because underscore was no longer invalid in labels. I didn't feel very guilty about that one. What a dope. I remember reading about a new OP code being introduced on a processor. There was a note of caution that I found almost funny: the new OP code would not cause a problem for any program *unless* that program were depending on the OP code *not* to be valid. Where's my S0C1? I need my S0C1! After all these years in the business, I would not bet the farm on there being no such program. The HOLDDATA cited by Radoslaw falls short of sounding the proper alarm, but it's not misguided. Muted and vague, but not wrong. The most innocent of changes we implement can wreak havoc on applications we would not otherwise have met in a dark alley. . . JO.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [EMAIL PROTECTED] "R.S." <[EMAIL PROTECTED] LTIBANK.COM.PL> To Sent by: IBM IBM-MAIN@BAMA.UA.EDU Mainframe cc Discussion List <[EMAIL PROTECTED] Subject .EDU> "action" in UK33496 04/19/2008 12:12 PM Please respond to IBM Mainframe Discussion List <[EMAIL PROTECTED] .EDU> HOLD(UK33496) SYS FMID(HCI6500) REASON(ACTION) DATE(08037) COMMENT (If the SYSPRINT file is being written to a data set, please note that a System Defined Blocksize will be allocated if no BLKSIZE is defined or a BLKSIZE of 0 is defined on the DD card. My humble questions: 1. Is it really ACTION to perform ? 2. Isn't the behaviour obvious and expected ? If yes, then why to mention it under any HOLD type ? 3. Is it funny ? I also found ACTION which was ...documentation change (in other PTF). -- Radoslaw Skorupka ---------------------------------------------------------------------- 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