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-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Mark S Waterbury
Sent: Sunday, April 16, 2017 1:41 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: DTAARA Lock Issue?
Roger:
Perhaps someone forgot to specify "*LOCK" on the IN statement, so you
could have something like this example:
D DataArea DS DtaAra(NextNumber)
D NextNbr 15P 0 INZ
...
C IN DataArea
C ADD 1 NextNbr
C OUT DataArea
C MOVE NextNbr Result
and thus, no protection from multiple jobs simultaneously accessing and
updating that data area. This will compile and run "just fine" and it
might even seem to "work" okay most of the time, but,when two jobs run
this code at the same time, you could experience exactly the issue you
reported.
What is needed is:
C *LOCK IN DataArea
C ADD 1 NextNbr
C OUT DataArea
C MOVE NextNbr Result
Hope that helps...
Mark S. Waterbury
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