There are probably several reasons IBM is shutting own JES3
The install base has dwindled such that is costs more to support
that revenue generated.
Also I have not seen in years people use a JES3 console. People
have scheduling systems
Vs. JES3 Scheduling
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Dyck, Lionel B. (TRA)
Sent: Wednesday, August 30, 2017 9:24 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [EXTERNAL] Re: IBM to stabilize JES3 (was: IBM to finally drop
JES3)
Clark - an active project to get off JES3 - that is easier said than done.
There is no cost justification for doing so, there is no ROI, there is no
significant benefit to such a project. All a site will encounter is
significant costs to (a) retrain sysprogs, operators, all JECL users, (b)
convert from using JES3 DJC to the not quite the same JES2 DJC networks, (c)
loss of data set awareness allowing jobs to enter execution only to wait for
data sets held exclusive (disp new/old) or trying to access data sets
exclusive, (d) loss of functionality from locally developed DSPs, (e)
conversion of all JES3 user exits with probable loss of functionality, (f)
updating all automation tools to use JES2 commands (assuming there are
equivalent commands), (g) the lost opportunity to use the resources spent on
the migration for other projects that help the company be more competitive,
more productive, save money, be more agile, improve operations, support
their users/customers, etc.
Just my $0.01
This e-mail reflects only my opinion and not those of my employer or those
I'm contracting with.
--------------------------------------------------------------------------
Lionel B. Dyck
Mainframe Systems Programmer - TRA
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Clark Morris
Sent: Wednesday, August 30, 2017 8:56 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [EXTERNAL] Re: IBM to stabilize JES3 (was: IBM to finally drop
JES3)
[Default] On 30 Aug 2017 04:43:59 -0700, in bit.listserv.ibm-main
rel...@us.ibm.com (Peter Relson) wrote:
>It is very disturbing to see someone use an inflammatory representation
>such as the initial subject of this thread when that is very much *not*
>what the SOD said.
The handwriting was on the wall decades ago on JES3. SMS was made available
to JES2 shops on XA but not JES3. JES3 required the licensing of BDT to get
SNA NJE while JES2 had it native. SNA NJE between JES3 and VSE did not work
requiring resolution by what I recall was the Network Protocol Board (I was
the systems and JES3 programmer at the shop that was first to try it). Over
the years the more expensive job entry sub-system was the last to get some
new functions if it ever got them. I would highly recommend that JES3 shops
have an active project to get off JES3 and save money.
Clark Morris
>
>Maybe in practice stabilization will result in some JES3 users choosing
>to move (perhaps because they need new function that would become
>available only in JES2), but IBM is not dropping JES3, nor did the
>statement of direction say or imply anything about doing so. That's
>like saying just because we might have stabilized some system service
>that you must stop using it. That too would be a faulty conclusion.
>
>Regardless, input such as what Cheryl W refers to is important.
>
>(John Eells would probably have stated the above in a cleaner way;
>apologies to him.)
>
>Peter Relson
>z/OS Core Technology Design
>
>
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