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Lim Hock-Chai wrote:
I've an export procedure that will call the QWVRCSTK api to
get the call stack info of the current job. It works fine
when calling from a RPG program. However, it failed (Returns
value of N in Information-status field) when it is call from
a sql UDF. Any idea why?
I believe that is the result of the SQL UDF running in its own
thread. There is a clause on the CREATE FUNCTION which can minimize the
chance the function will run in its own thread; IIRC it is the NOT
FENCED clause which will encourage, but not require, that the SQL should
run the function in the primary thread. The function runs in\from the
LIC, thus no stack information will be available. If the primary thread
of the job is being retrieved instead [of the thread dedicated to the
function], then a similar origin [per threading] may be the cause, but
it would most likely be that the primary thread is initially busy down
in the LIC [e.g. starting new threads] such that repeated attempts might
be required to obtain the information.
Regards, Chuck
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