KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q276470: Dynamically Defined LUs Show Pending Status After PU Recycled

Article: Q276470
Product(s): Microsoft SNA Server
Version(s): 3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3
Operating System(s): 
Keyword(s): kbDSupport kbsna300sp1 kbsna300sp2 kbsna300sp3 kbsna300sp4 sna4 kbsna400sp1 kbsna400sp2
Last Modified: 12-JUN-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft SNA Server, versions 3.0 SP1, 3.0 SP2, 3.0 SP3, 3.0 SP4, 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3 
-------------------------------------------------------------------------------

SYMPTOMS
========

SNA Server may fail to dynamically activate a logical unit (LU), through the
host Dynamic Definition of Dependent LUs (DDDLUs), after the physical unit (PU)
on the mainframe has been recycled. The result is that the LUs that are defined
on this host connection may show a "pending" status when viewed in SNA Server
Manager after an application tries to connect to the LUs. The application that
is trying to reconnect to the LU at this point cannot get an active session to
the host.

The same problem may occur when the host connection is stopped and restarted
through SNA Server Manager.

CAUSE
=====

The SNA Server service doesn't check whether the LU-System Services Control
Point (SSCP) session is down before it tries to send the Network Management
Vector Table (NMVT) request to deactivate the session when an application
disconnects. This results in the SNA Server not sending an NMVT request to
activate the LU when an application tries to reconnect to an available LU.

NOTE: The LU will be available again once the PU is activated on the host or the
connection is restarted on SNA Server.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for SNA Server 4.0. For
additional information, please see the following article in the Microsoft
Knowledge Base:

  Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft SNA Server versions
3.0 (all Service Packs), 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3.

This problem was first corrected in SNA Server 4.0 Service Pack 4.

MORE INFORMATION
================

For additional information about SNA Server and DDDLUs, click the article
numbers below to view the articles in the Microsoft Knowledge Base:

  Q161492 INFO: LU Session Activation Using Dynamically Defined Dependent LUs

  Q164592 Dynamically Defined Dependent LU Support for LUA LUs

  Q276453 Dynamically Defined Dependent LU Support for Printer LUs

Additional query words: Snaservr sp1 sp2 sp3 service pack sp

======================================================================
Keywords          : kbDSupport kbsna300sp1 kbsna300sp2 kbsna300sp3 kbsna300sp4 sna4 kbsna400sp1 kbsna400sp2 kbsna400sp3 kbSNA400sp4fix kbSNA400PreSP4fix 
Technology        : kbAudDeveloper kbSNAServSearch kbSNAServ400 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ400SP1 kbSNAServ400SP2 kbSNAServ400SP3 kbSNAServ300SP2 kbSNAServ300SP4
Version           : :3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.