On Tue, Feb 22, 2011 at 11:19 AM, Tony Lubrano <[email protected]>wrote:

> Yes...
>
> L    Rx,PSAAOLD-PSA(,R0)
> L    Rx,ASCBASXB-ASCB(,Rx)
> L    Rx,ASXBITCB-ASXB(,Rx)
> L    Rx,TCBFSA-TCB(,Rx)
> L    Rx,SA_R1(,Rx)
> CLC  =CL4'ECP',0(Rx)
> JE   >>> IMS BMP
> CLC  =CL6'DFSRRC',20(Rx)
> JE   >>> IMS MPP
>
> If you want, you can do a BLDL on DFSPRPX0.  If it is found in the JPA, you
> are likely to be running in an IMS dependent region. Or, you can follow the
> CDE chain(s) to locate the module.



Just to nitpick slightly;

CSVQUERY would be a better choice than BLDL or chasing CDEs. Also,
 regardless of which path you take to find the job step TCB, it isn't wise
to assume either that there is a first save area, or that the contents of
the R1 slot point to anything at all. If it is a real job step then there
will always be an FSA but below that all bets are off. You need to apply a
sniff test before referencing those data areas, or wrap a little recovery
around the instruction path above.



-- 
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