Simply put, there is no MVS or z/OS concept of a "pseudo abend" beyond
some internal RTM processing. I can see that IMS uses this term but it has
no meaning to z/OS itself. Within a CommServer book there is mention of
"pseudo abend" within IMS saying "Under certain situations IMS
applications cannot complete. When such a condition occurs, IMS abnormally
ends the MPR with a status code (such as U0777) and reschedules it.". I
don't know how "abnormally end...with a status code" relates to "abend".
Within an IMS book, it does say that a pseudoabend does not result in the
detecting module issuing an abend and some subsequent module "indicates a
dependent-region abend" ("indicates" should not, to my mind, equate to
"issues", but I have no idea what IMS does)
Task termination resmgrs get control when the task terminates, whether
normally or abnormally. So if "ends the MPR" or "indicates a
dependent-region abend" results in a task termination, a resmgr for that
task will get control.
A task terminates upon an SVC D (when no recovery routine retries).
Period. That SVC D might be issued by a user (such as the ABEND macro) or
by the system itself (for example, as part of CALLRTM processing when
transitioning from RTM1 (FRRs) to RTM2 (ESTAE-type) or when the last RB of
a task returns to the system).
Thus:
a task termination resgmr will never get control if the recovery routine
retries;
a task termination resmgr (let alone an ESTAE-type recovery routine) will
get control only if an SVC D occurs.
Peter Relson
z/OS Core Technology Design
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