> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of Barbara Nitz > Sent: Thursday, June 04, 2009 12:43 AM > To: [email protected] > Subject: Re: Why are z/OS people reluctant to use z/OS UNIX? > > I am one of those who hate UNIX on z/OS. Here's why: > <snip> > 2. A pain with regard to system controls. > a) USS is expected to be exempt from all controls MVS has - > look at iefusi and > the huge warnings surrounding it if you *DON'T* give a USS > address space > what it wants! Same holds for other things.
Amen! If UNIX work needs to be exempt from IEFUSI controls, then write z/OS to ignore IEFUSI values for it! > b) Try to use WLM on one of those USS applications! We have one that > routinely runs around 65 address spaces that all wake up > (timer driven) at the > same time. Having (at least) 65 tcbs ready to run on 2 cps > plays havoc with > WLM PI, which is routinely in the three-digit-range. <sarcasm > on> One would > think that IBM by now had introduced the concept of a 'UNIX > transaction' that > can be classiifed via a response time goal. <sarcasm off> No > such luck. I have > complained about this before, check the archives! Double agreeded. I also hate the fact that I don't have a way to assign a different SRVCLASS depending on "batch" or "interactive" OMVS work. A batch job which fork()s ends up with the fork()ed address space being reclassified and I cannot propogate the parent's SRVCLASS to the child. So a prod and test batch job which fork()s get a child with the same, usually wrong, SRVCLASS. <snip> <snip> > > I hate USS because architecturally it does not fit into z/OS. > UNIX probably has > it uses, but not in z/OS. Just my opinion, of course. I guess I still soet of like it because we don't use it for very much. > > Barbara Nitz > -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-961-6183 cell [email protected] * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- 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
