How can we distinguish between an online and batch program
in IMS environment?
Answer Posted / luiz
For IMS, the answer to that question really depends on your definition of batch and online:
If you consider Online as purely interactive transaction processing, as performed by a MPP, JMP or IFP region, then the best way to clear the doubt is to display the program, see if it has one or more transactions associated with it, and look if the class(es) of said transaction(s) is(are) defined in the executing MPPs of the IMS. If there's a transaction but its class is not defined on the MPPs, your program is probably used in batch processing by a transactional BMP; if the PGM has no associated transaction, then it is used by a non-transactional BMP. Any other IMS programs that cannot be displayed are batch DLI ones.
On the other hand, if you consider Online as any processing that can only happen when IMS is up, then if your program can be displayed, it is an online program - be it for a BMP, MPP, JBP, JMP or IFP. Any program not defined in IMS is an offline program meant to be used in batch by a DLI job.
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