On 2/7/2020 12:37 PM, John Szura wrote:
Is there a way to tell if you application is running under a Secondary JES?  We have common code that is used in several products that needs to check the JES it is running under.  If I look at the chain of SSCTs it will only tell me there are more than one JES running but I can't find a way to determine under which the application started.


John, I mentioned this same thing (albeit without a code example) in response to your previous question on a similar topic. The "life of job" SSIB tells you which subsystem you are started under. It's the same SSIB you should be using to communicate via the SSI to that subsystem. You should almost never need to search the SSCT chain other than for esoteric reasons.


   ************************************
   * Determine Subsystem Type         *
   ************************************
     LLGT  R14,PSATOLD             Load TCB address
     USING TCB,R14                <Synchronize TCB DSECT
     LLGT  R14,TCBJSCB             Load JSCB address
     USING IEZJSCB,R14            <Synchronize JSCB DSECT
     LLGT  R14,JSCBACT             Load active JSCB address
     LLGT  R14,JSCBSSIB            Load Life-of-Job SSIB address
     DROP  R14                    <Drop JSCB DSECT
     IF LTGR,R14,R14,NZ            If life-of-job SSIB exists
       USING SSIB,R14               <Synchronize SSIB DSECT
       IF CLI,SSIBSSID,EQ,SSIBJES2,  If subsystem type = JES2
          OR,                        .. OR ..
          CLI,SSIBSSID,EQ,SSIBJES3,  .. subsystem type = JES3
         XGR   R15,R15                 Set return code = 0
         MVC   ECAJTYPE,SSIBSSID       Copy JES subsystem type
         MVC   ECASUBNM,SSIBSSNM       Copy JES subsystem name
       ELSE ,                        Else not JES2 or JES3
         LGHI  R15,4                   Set return code = 4
       ENDIF ,                       EndIf subsys = JES2 or JES3
       DROP  R14                    <Drop SSIB DSECT
     ELSE ,                        Else no life-of-job SSIB
       LGHI  R15,4                   Set return code = 4
     ENDIF ,                       EndIf life-of-job SSIB exists


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Edward E. Jaffe
831 Parkview Drive North
El Segundo, CA 90245
https://www.phoenixsoftware.com/


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