RE: Replacing *SRVPGM in production

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I use the UPDSRVPGM command.  I still get a few errors from trigger programs
that fire off while the system does the switcheroo, but they have always (so
far!) worked their way up to an error with a retry option so it's just a
hiccup.

The problem with the QRPLOBJ option is that then you have some jobs on the
old service program and some on the new.  I believe that falls under the
'unpredictable results will occur' we so often hear about.

-----Original Message-----
From: Smith, Nelson [mailto:NSmith@lincare.com]
Sent: Monday, November 19, 2001 9:21 AM
To: MIDRANGE-L@midrange.com
Subject: Replacing *SRVPGM in production


Has anyone come up with a way to replace an "active" service program in
production (with a new version) without getting pointer errors in the
programs that are currently using it?

I'm looking for some method kinda like how the OS moves existing programs to
QRPLOBJ and other programs calling them can still find them.  That doesn't
seem to work with service programs.  Replacing a service program that is
currently "in-use" always seems to cause the calling programs to lose their
way. I assume that is because the pointers are resolved when the calling
program starts up and the replacing service program goes to a new location.
Is there some way to make calling programs continue to point to the old
service program until they end?

Nelson Smith, CDP, CCP
IBM Certified Specialist
AS400 RPG IV Programmer
(727) 431-8243
(800) 284-2006



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