On 5/15/2017 7:25 PM, Charles Mills wrote:
This is the world's dumbest question if you're a sysprog but I'm a developer with nearly zero sysprog experience.Whenever in the past that I have taken a quick look at SET PROG=(xx,yy) I assumed that PROGxx + PROGyy in the parmlib concatenation *totally replaced* the contents of whatever PROGaa and PROGbb had been specified in IEASYSxx at IPL. But as I read the documentation now I get the impression instead that SET PROG=(xx,yy) causes PROGxx and PROGyy to be processed essentially as scripts each line of which incrementally modifies whatever is already in effect. In other words, if I entered SET PROG=ZZ and PROGZZ was devoid of statements other than comments then the system would be left unchanged, regardless of what had been in PROGaa and PROGbb at IPL. If PROGZZ contained one APF ADD statement, then that DSN would get added to the APF list, much as if I had entered SETPROG APF,ADD,DSN=...; and every other system parameter would be left unchanged. Is my latter impression more correct?
There are no dumb questions, only dumb developers. ;-) SET PROG is additive, and yes, if you only have one line that is an APF ADD DSN, then it will add only that dataset. If you add and delete lines from your PROG00 member (assuming you start your system with that) which contains only APF ADD statements, then the ADDs will be added, but the ADD statements you removed will still be in APFLIST. To remove any datasets from APFLIST, you have to issue an explicit APF DEL with SET PROG, or SETPROG APF,DEL.
Regards, Tom Conley ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
