Category Archives: Uncategorized

(Originally posted 2005-11-11.) I’ve not really gotten into EWLM and ARM – yet. But I think this APAR will be of interest to those who have. And I expect I will get interested in it when it’s more fully established… PK11801 DDF FULLY-ENABLED EWLM ARM SUPPORT describes how the DDF support for EWLM / ARMContinue reading “DDF and EWLM”

(Originally posted 2005-11-11.) One of the cardinal rules for a successful blog has been to write often. Clearly I’ve not done that for some time. Indeed I missed writing about zSeries Expo in San Francisco in September. And all I can say is that you really wouldn’t want to know about the internals of writingContinue reading “I’m Back”

(Originally posted 2005-07-11.) This is perhaps fairly basic for those of you who’ve read the fine print on zAAPs and IRD, but I needed to see it in someone’s data: IRD Weight Management will feel free to vary the weight for the “Type 1” pool for a z/OS LPAR with zAAPs. But it will keepContinue reading “IRD and zAAPs”

(Originally posted 2005-07-11.) APAR PQ96908 accumulates updates to the DB2 for OS/390 and z/OS V7 and V8 IFCID flat files (DSNWMSGS) that occur in the last half of 2004 and the first half of 2005. DSNWMSGS documents all the fields in each of the DB2 SMF records (and other DB2 instrumentation sources). Personally I carryContinue reading “DB2 Instrumentation Changes – Documentation Updated”

(Originally posted 2005-07-05.) Periodically on IBM-MAIN I’m caused to revisit something. With the advent of z990/z890 and “supposedly abundant” 🙂 real memory it seems to be time to revisit paging subsystem design. You might perhaps think that in these days of zero paging you could skimp on paging subsystem design. And you’d be wrong. 😦Continue reading “Paging Subsystem Design”

(Originally posted 2005-06-29.) As a relative newcomer to the world of web programming I’ve been learning javascript. The reason I chose this language is (quite apart from already knowing java/swing) there is a very useful javascript tool called GreaseMonkey. Greasemonkey allows you to modify web pages you’re browsing. Such modifications include Inserting HTML into aContinue reading “GreaseMonkey”

(Originally posted 2005-06-15.) Yesterday we IBM “pioneer” bloggers had a conference call where we thought about enhancements to this blogging site. One that seemed to get some measure of support was the notion of a place where readers could make unsolicited comments and ask questions. I’m just writing about things I think are interesting. I’mContinue reading “Things I could write about”

(Originally posted 2005-06-13.) For a number of years now we’ve been talking about the importance of DB2 Virtual Storage management. The real credit goes to John Campbell of the DB2 lab who pioneered this stuff. We usually see DB2 Virtual Storage as an issue in 2 ways: A client presents with the problem and asksContinue reading “DB2 Virtual Storage Goes Mainstream”

(Originally posted 2005-06-13.) I’d made the assumption (in my code) that IRD would vary offline the top logical engines when it decided to vary an LPAR’s logical engine offline. In fact that isn’t the case. I have data from a US company where it’s engines 2 and 3 (out of the range 0-11) that tendContinue reading “Learn from my mistakes – Which Engines Does IRD Vary Offline?”

(Originally posted 2005-05-25.) This is mostly to say a big thank you to all the customers and other consultants at UKCMG (which has just ended). It’s great to catch up with you all. And also to spend time with Don Deese and Mike Moroz. > I genuinely believe in user groups and so I’d likeContinue reading “UKCMG Conference”