Re: No 5250-based applications

I haven't been following this thread in detail, but I believe there has 
been discussion on what requires the Interactive performance feature.
I asked Brian Podrow this morning, and his answer was "anything that uses 
a display file".  I asked specifically about a "batch" program that 
acquired a display device, and he said if it used a display file it would 
"invoke the wrath of the Interactive 5250 gods and be treated as an 
Internative program" (my words, not his).  The exception being anything 
run at the console - which is allowed.  I asked specifically whether it 
was just jobs at the console that were allowed, or any ONE interactive 
job, regardless of where it was running from.  He thought ONE job would be 
allowed, whether from the console or not, but wasn't 100% certain.

...Neil





"Peter Dow" <pcdow@yahoo.com>
Sent by: owner-midrange-l@midrange.com
2001/04/25 20:20
Please respond to MIDRANGE-L

 
        To:     <MIDRANGE-L@midrange.com>
        cc: 
        Subject:        Re: No 5250-based applications


From: "Nathan M. Andelin" <nathanma@haaga.com>
> When I reach that point, I want the HTML user interface to offer
performance
> and productivity comparable to it's 5250 counterpart.  I think that's
> possible, but depends partly on IBM.  It takes more CPU, memory, and
> bandwidth to generate an HTML data stream.
>
> This may be the heart of the Interactive vs. Batch debate.  If I develop 
a
> Web application that offers functionality comparable to it's 5250
> counterpart, but requires hardware that's 20 times more expensive to
support
> the same number of users, then people will stick with the 5250
application.
>
> Or will they?  Developers and end-users may simply migrate to hardware
that
> offers better price vs. performance for Web applications.  How many
iSeries
> shops that have favored Windows over OS/400 for Web development?  Would
that
> explain the reliability concerns and higher development cost?

This sounds very similar to DOS vs Windows. How many DOS (i.e 5250) apps 
are
still being used? The number of Windows platforms out there certainly 
seems
to indicate people prefer GUI. I recently helped replace a DOS app with a
Windows/AS400 app because the customer felt that their seasonal temporary
employees would be able to learn it faster, and because it can show more
information in a single screen than a 24x80 or 25x132 screen. And so far,
hardware prices have been dropping fast enough to make it affordable.

Regards,
Peter Dow
Dow Software Services, Inc.
909 425-0194 voice
909 425-0196 fax


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