When an XCTL is done, does the tranid change ? Is a new
task created ? Does it cause an implicit
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Answer Posted / guest
it does't change trans-id, the XCTL command invokes another
program option on this commandd , a copy of d data in d
area it names is passed to the invoked program and stored
in its DFHCOMMAREA field. becoz the invoked program
receives a copy of d data sent to it from d invoking
program , changes made to d data by the invoked program are
not reflected in d invoking program.
if the program u specify does not exist , a PGMIDERR
exceptional condition occures . in most cases , u don't
need to test for this condition.
when u use the XCTL command to invoke a program , the
invoking program ends and its memory allocations r released
since control will not return to it.
-> i causes an implicit.
-> it does not create new task it simply tranfers control
to one application program to another application program
at the same logical level.
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