Re: Monitor for existing job.

It is impossible to completely prevent the submission of a job of a given
job name, if someone has authorized access to SBMJOB. As you suggest, the
control is really in a program.

But in most situations that are reasonably controlled - users restricted
from command line, good menu-base for applications, etc. (yeah, yeah, all
the IP leakage is still a problem), then you only need to worry about your
rogue developers and operations folk.

At 12:20 PM 4/9/02 -0500, you wrote:
>I guess my confusion is related to the word "job".
>You are really just talking about a command or a
>program. Not a job as such.
>
>----- Original Message -----
>From: Hall, Philip <phall@spss.com>
>To: <midrange-l@midrange.com>
>Sent: Tuesday, April 09, 2002 12:08 PM
>Subject: RE: Monitor for existing job.
>
>
> > This message is in MIME format. Since your mail reader does not understand
> > this format, some or all of this message may not be legible.
> > --
> > [ Picked text/plain from multipart/alternative ]
> > > And how would you prevent another
> > > one with the same simple name but
> > > using completely different resources
> > > to run or maybe it would be ok to run
> > > this as there is no conflict.
> >
> > This brings us back full circle to what Mike wanted, a way to ensure that
>if
> > the job was already running that a duplicate couldn't be run at the same
> > time.
> >
> > The various answers all described that the code in the job create some kind
> > of semaphore/mutex/flag that is only live while the job runs - if a second
> > copy tries to run, it will see the 'in-use' and quit.
> >
> > Lots of jobs do this kind of thing (sometimes explicitly, sometimes not),
>on
> > many OS's.
> >
> > --phil
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