I have a quick question about how JFCBX control blocks are chained
together.
If a dataset has more than 5 volume serial numbers, the JFCBEXAD field
in the JFCB gives the SVA of the first JFCBX control block which
contains overflow volume serial number information.
However the definition of the JFCBX, to me at least, seems ambigous as
to how I find the next JFCBX. There seem to be two fields, JFCBXTTR,
which contains the SVA of the next extension block, and JFCBXNXT which
contains the address of the next JFCB extension. Do these amount to the
same thing? Which should I use?
Many thanks.
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