Whew! Simple this isn't (for what ought to be a simple question, no?). The answer would appear to be:
- Use IAZXJSAB to determine the name of the subsystem under which one is running. - Pass that name to IEFSSI to get the address(?) of the SSCVT (not clear how but IBM says "The SSCVT should be accessed only through the services provided by the IEFSSI macro."). There's a pointer in the CVT but it gets complex if there is more than one subsystem. - Field SSCTSSID of the SSCVT unambiguously indicates JES2 or JES3. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of McKown, John Sent: Tuesday, February 07, 2006 12:18 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Simplest way for app to tell if JES2 or JES3 environment? > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Charles Mills > Sent: Tuesday, February 07, 2006 11:46 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Simplest way for app to tell if JES2 or JES3 environment? > > > > IAZXJSAB macro, with the COMPID parameter will tell you that. > > Okay, totally dumb follow-up question. COMPID= is documented > as Specifies > the location where the system is to return the 4-character name of the > subsystem that created the JSAB. > > Question: is the "name" of JES2 or JES3 always "JES2" or > "JES3"? If a shop > renamed their startup PROC JES2TEST or JES3V1R7 would COMPID= > still return > "JES2" or "JES3"? > > Charles No, the name of JES2 is not always "JES2". I've run what was (is?) called PolyJES where I have multiple, separate JES2 subsystems running on a single MVS image, each called something different. Rember that a subsystem can be a max of 4 characters, so JES2TEST is not possible. I have run with JESA, however. If you're a pervert, you could run JES2 and call it "JES3" <grin>. Perhaps you could tell us why you want to know? For instance something like: "I know that if I'm running JES3, then I can do ... and it will work." Where "..." is something that is JES3 only such as DJC (Dependant Job Control). The field SSCTSSID will tell if this is JES2, JES3, or "other" (what other?). I think you must "chain chase" to find this control block. I ---------------------------------------------------------------------- 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
