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  2. RPG400-L
  3. February 2008

Re: check for active program

Hi, Walden:

True enough.

But if you ever need to recompile a program in "production" (e.g. for an "emergency fix") and you have done this (allocated the *PGM) this will interfere with the IBM compilers REPLACE(*YES) processing and you will not be able to replace a *PGM that is "in use" and has a *USE lock on it. (I think that is part of the rationale as to why IBM does not automatically add a *USE lock when a *PGM is CALLed.)

Regards,

Mark

> Walden H. Leverich wrote:
This will not work, because OS/400 or i5/OS does not place a *USE lock

on a *PGM when it is "in use" ... :-o

But you can allocate yourself if you have a need to. When I've needed to
ensure only one instance of a program is running I've had the program
allocate itself *excl and if successful back it off to a *use lock. If
the program is active another instance can't get the excl lock, and if
the program dies there's no dataarea to reset.

-Walden


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