Chris,

I think I can help.  I ran across a similar issue a while ago.  CICS is
configured to reestablish a connection when it "sees" a abnormally
terminated session such as the user closing a TN3270 window.  The behavior
is governed by CICS settings.  I used to work with a certain awesome
CommServ/CICS guy that indicated that the trouble is most likely the
CREATESESS(YES) on the TYPETERM definition.  When the terminal is
autoinstalled, CICS will issue a message indicating what TYPETERM was used.
Check the MSGUSR message DFHZC6935I for the details.  If the TYPETERM has
CREATESESS(YES) specified, then CICS will attempt to reestablish the
connection after the initial auto-install of the terminal has been done.
Normally, CREATESESS(YES) is used for things like printers to allow CICS to
initiate the session.  Of course  VTAM is just doing what is normal and
trying to be helpful but to no avail.. since no one is on the other side
anymore.  

There is also the possibility of a customized Node Error Program.  I am
supplying a link for why a Node Error Program might be used.
http://publib.boulder.ibm.com/infocenter/cicsts/v3r1/index.jsp?topic=/com.ib
m.cics.ts31.doc/dfha3/dfha357.htm

Rob Schramm
And special thanks to a Mr. Eades

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf
Of Chris Mason
Sent: Friday, February 18, 2011 10:29 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: Help with ADJSSCP

George

I know I have a response outstanding regarding your "keep-alive" problem,
but I just spotted this. I seem to be the only list contributor dealing with
VTAM matters so I don't expect I'm taking the pleasure away from anyone else
by trying to deal with it immediately - although I'd be delighted to know
that I was - and all are invited to try to work out what I may be meaning
with that!

-

Actually the first point that comes to mind is why are you asking this
question because anyone who has been through usual VTAM subarea networking
education and worked with it should know all about the famous 087D sense
code, its various modifiers ands and IST663I messages and what they imply.

This reeks to me of a "let go" where the "suits" have decided that their
VTAM systems programmer was "superfluous to requirements" and has been
allowed to spend all his time on the golf course or supporting the football
team at away matches - or equivalent pursuits for a lady.

-

Now looking at the names of the LUs in this failed session setup, I see that
the origin LU (OLU) is 

FLANWR41.CICSPRDT

which looks like a CICS system and the destination LU (DLU) is one of your
TN3270 APPL statements (for external users),

FLANWR41.TELNE21E

This implies that CICS is trying to initiate a session with the TN3270 APPL
statement which is *not* usual. Usually, it is the TN3270 APPL statement
which is trying to initiate a session with CICS.

Note the message 

IST264I  REQUIRED ADJSSCP TABLE          UNDEFINED

which, in conjunction with the IST663I message with sense code 087D0002, is
saying that, the SSCP (VTAM) has a session setup request from an OLU
destined for a DLU which can't be satisfied in the "home" domain - because
the required DLU is not defined - or is inactive. Thus it needs to send the
session setup request to other, "away", SSCPs (also known in this context as
CDRMs) (VTAMs) and, to do this, it sends the request sequentially following
the order defined by the "adjacent SSCP" table defined for the DLU, which,
if it doesn't already exist, can be a default list for the "home" network,
as defined by the "network identifier" (NETID) - assuming we don't have an
SNI configuration, which in this case we don't since the NETIDs are the
same.

However, you don't have a suitable "home" network adjacent SSCP table
available maybe because you haven't actually got any other, "away", systems
running VTAM connected with subarea links to your "home" system which can be
used to build a dynamic adjacent SSCP list under control of the DYNASSCP
start option specified as DYNASSCP=YES, the default.

All of which is consistent with the messages you see - assuming two things:

1. TELNE21E is not active
2. You have specified, perhaps by default, the DUPDEFS start option as
DUPDEFS=APPL or DUPDEFS=ALL, the default.

I had a look at the explanation of the DUPDEFS start option and there is a
bit of a confusing comment under DUPDEFS=APPL. I think this means that what
I have described is likely to be valid only because you have defined your
TN3270 APPL statements as a *model* APPL statement - which, because of your
other thread, still ongoing, I know is as follows:

TN3270A  VBUILD TYPE=APPL
TN3270G  GROUP EAS=1
TELNI??? APPL
TELNE??? APPL

Well, as it should be now after my previous comments!

I think this means that the DUPDEFS start option is then irrelevant since
the LU name corresponding to the APPL statement is "known" only when it is
active - which leaves only 1 from above.

Perhaps you can explain what is causing this session setup attempt, which,
as I said, looks odd and we can take it from there.

Chris Mason

On Fri, 18 Feb 2011 09:09:23 -0500, George Rodriguez
<george.rodrig...@palmbeachschools.org> wrote:

>I've got this message on SYSLOG and I've read several IBM publications 
>to try and understand, but none of the pubs explain how to solve a 
>particular problem. If I understood the problem, then I can take action 
>in resolving it. Here are the messages I get on SYSLOG:
>
>IST663I  INIT OTHER REQUEST               FAILED  , SENSE=087D0002
>IST664I  REAL  OLU=FLANWR41.CICSPRDT   ALIAS DLU=FLANWR41.TELNE21E
>IST889I  SID = D60BACEC2F856D69
>IST264I  REQUIRED ADJSSCP TABLE          UNDEFINED
>IST314I  END
>
>I've looked up the sense code (087D0002):
>
>087D      Session services path error: A session-services request cannot
>          be rerouted along a path of SSCP-SSCP sessions.  This
>          capability is required, for example, to set up a cross-network
>          LU-LU session.
>
>0002      An SSCP is unable to reroute a session services
>          request because a necessary routing table is not
>          available.  This means that there is no adjacent
>          SSCP table corresponding to the rerouting key in the
>          resource identifier control vector.  The receiver of
>          this value will, if possible, try rerouting to
>          another SSCP.
>
>          VTAM Information: When VTAM receives this sense code
>          for a session initiation, it continues searching
>          through the adjacent SSCP table until the
>          destination LU is found or routing is exhausted.
>
>I just don't how to take the information from the message and do what's 
>needed to eliminate the problem. Can any of you great MVS ListServers 
>help me out?
>
>Thanks in advance...
>
>*George Rodriguez*

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