> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Paul Gilmartin > Sent: Tuesday, July 19, 2011 5:46 PM > To: [email protected] > Subject: Re: Re-entrant module stores into itself with no 0C4 > > On Tue, 19 Jul 2011 21:46:20 +0000, Gibney, Dave wrote: > >> >> > >> > http://publib.boulder.ibm.com/infocenter/zos/v1r12/index.jsp?topic=/com.i > bm.zos.r12.ieae200/progref.htm > >> > > >> >Actually, it not that I think it is no good, I think it's a long time > >> >coming. > The > >> problem is that I also know of at least one program (central to our batch > >> processing) that exploits this "feature" :) > >> > > >> Relink it. > > > >I said exploits, not tolerates. By being marked RENT, the system still only > loads one copy. Relink and I'll quickly use up virtual memory and suffer the > overhead of loading multiple copies. > > > Since Ed J. has kindly reminded me of the difference, perhaps you > should mark your module RENT,NOREFR (this shouldn't cause problems > with REFRPROT, but perhaps Ed's experience is otherwise); and the OP > mark his REFR and set REFRPROT=YES.
This is a reasonable suggestion and I may try it someday. Of course we started this path when I stated I know of one module we had which would be broken by setting REFPROT. I expect I would/will find others if/when I ever try REFPROT in our environment. So far, I still have products requiring key 8 user CSA, so REFPROT is further down on the list of things I may never get to :) because of the things higher on the list I might get to someday :( Dave Gibney Information Technology Services Washington State University > > In fact, many decades ago, a colleague did the experiment and > confirmed what he inferred from the manual. IIRC, REUS was > sufficient to prevent loading multiple copies. But the memory is > fading, and perhaps things have changed. > > -- gil > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
