Re: Only one instance of program.

probably the simplest way is to have the number saved in a file somewhere,
perhaps along with other similar numbers?  Then, when a program calls your
new program your new program can get the last valid number, add 1 to it, and
update the file with the newest valid number.  The record is locked during
these three lines of code, so there never would be an instance where the
program would provide the same number twice,
 
---------------------------------
Booth Martin
http://www.martinvt.com
---------------------------------
-------Original Message-------
 
From: RPG programming on the AS400 / iSeries
Date: 11/09/05 18:18:42
To: rpg400-l@xxxxxxxxxxxx
Subject: Only one instance of program.
 
Hi,
 
 
 
Is there anyway by which I can ensure that only one instance of a program is
running? This program generates a number and there is chance that it can be
called by 2 programs to generate number and there is a chance both can get
same number.
 
 
 
Regards,
 
Venky.
 
 
 
 
 
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