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midrange.com
Does the called program need to communicate back to the calling program?
If not then stop calling the called program. Instead, write out to a data
queue. The second program would access this data queue. If you send a
dummy 'QUIT' record to the dataqueue have the queue processing program
shutdown. Not only will this allow a graceful shutdown, but, it should
speed the file processing up because no longer are the updates waiting on
the called program to process the data. Once you've gone data queue,
you'll never go back.
Rob Berendt
==================
A smart person learns from their mistakes,
but a wise person learns from OTHER peoples mistakes.
"Mike Silvers"
<msilvers@HBS-INC To: "RPG400-L"
<RPG400-L@midrange.com>
.COM> cc:
Sent by: Subject: Trigger Problem
owner-rpg400-l@mi
drange.com
05/25/01 07:13 AM
Please respond to
RPG400-L
All,
I have a trigger program on a file. I have a few problems with the program
and locks on files. Here is the situation..... I have a trigger program
written in RPG that is attached to a file. The trigger program looks at
the
value of a data area and, depending on the value of the data area, either
calls a program to do some work, or does not call the program. The program
ends with a RETURN and does not use the default activation group. The
second program is where the problem lies. The second program updates and
reads some files. When it completes, it returns without setting on LR.
This was done for performance, because the file accesses will be high in
number and there are other trigger programs from another consultant on this
file. The intent of this process is that by changing the value of the data
area, we can isolate the program that does the work from the trigger calls.
We can then change the program, if needed. Here is the problem: if the
program that does the work is called one time, there is a lock placed on
the
program (in other words, the object is allocated). If we turn off the data
area so the program that does the work is not called anymore, the lock
still
exists. This is the problem. Does anyone have any suggestions on how to
resolve the locking issue (other than having the users sign off -- that is
not an option)?
Thanks!
Mike
================================
Mike Silvers
AS/400 Senior Programmer/Analyst
AS/400 IBM Certified RPG IV Developer
AS/400 IBM Certified Solutions Expert
Hainey Business Systems
8 E. Canal St
Dover, PA 17315
Branch Office: (410) 397-8739
Phone: (800) 932-3380
Fax: (717) 292-9474
Web: http://www.hbs-inc.com
________________________________
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