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The issue isn't with different apps running simultaneously; it's that app that submits a job to build data, then another job to use that data. Or perhaps the tired vendor app that isn't using transactions, so you can't create two POs against the same vendor at once. Our ERP expects to run single threaded. My problem is I want to segregate reports to their own job queue so the 20 AP terms reports don't cause a backlog for jobs that run the business. However, the submit code is sometimes in a driver program, sometimes in a message file. Haven't had time to track the submit mechanism for common reports.

--Loyd

On May 6, 2010, at 6:36 PM, "Harman, Roger" <Roger.Harman@xxxxxxxxxx> wrote:

If you have a job that truly needs to be single thread, run it out of a single thread jobq. If not, run as many as you want either from multiple single thread jobq's or a multi threaded.

We run JDE, Kronos, Infinium, Island Pacific, and home grown - all out of different jobq's. No conflicts.


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Evan Harris
Sent: Thursday, May 06, 2010 3:59 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Why do people set up their batch submission defaults to run multiple batch jobs at the same time?

Lukas is right though.

His primary point was that if the application expects to run single threaded
it should ensure it or program against those situations where a second
instance starts.

That's not 'idealized' it's what the application has been designed to
expect.

Regards
Evan Harris


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of sjl
Sent: Friday, 7 May 2010 10:42 a.m.
To: midrange-l@xxxxxxxxxxxx
Subject: Re: Why do people set up their batch submission defaults to run
multiple batch jobs at the same time?

Lukas -

No offense intended, but life in your idealized world is not as easy as it
is in the real world. Most AS/400 - iSeries - System i - IBM i shops are
running code that was written over 20 years ago, and have no intention of
'fixing' it to match your conception of 'right'.

- sjl


Lukas wrote:
No. Proper program logic should ensure that something like this can't
be destructive - running the same job twice should result in a "job x
is already running" message. This can be achieved by proper locking.
Forcing a single-batch job to fix problems in the application logic..
Well, it works - but it's a workaround, not a proper solution.

What can be a reason for running only a single batch job can be
performance, but this is going to be less and less of an issue...


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