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Q236123: Large Com.cfg File May Cause Dynamic Updates to Fail

Article: Q236123
Product(s): Microsoft SNA Server
Version(s): WINDOWS:3.0,3.0 SP1,3.0 SP2,3.0 SP3,3.0 SP4,4.0,4.0 SP1,4.0 SP2
Operating System(s): 
Keyword(s): kbsna400sp3fix kbsna300sp1 kbsna300sp2 kbsna300sp3 sna4 kbsna400sp1 kbsna400sp2
Last Modified: 08-MAY-2002

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The information in this article applies to:

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

LUs that are added to pools by means of the SNA Manager may not be dynamically
picked up by clients if the SNA Server configuration file is very large. The
following error message is displayed when a client attempts to open a session:

  No LU in LU Group Free.

CAUSE
=====

The problem is caused when the dynamic updates time out while they are waiting
for a response. This problem can occur when you save a very large SNA Server
configuration file (such as Com.cfg) as it will generate a large number of
dynamic status updates. This problem occurred on a customer configuration that
had 56,000 objects and a Com.cfg file size of 7 MB.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for SNA Server version
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


WORKAROUND
==========

Restarting the SNA Service resolves the problem.

STATUS
======

Microsoft has confirmed this to be a problem in Microsoft SNA Server version
3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 3.0 SP4, 4.0, 4.0 SP1, 4.0 SP2. This problem was
first corrected in SNA Server version 4.0 Service Pack 3.

Additional query words:

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Keywords          : kbsna400sp3fix kbsna300sp1 kbsna300sp2 kbsna300sp3 sna4 kbsna400sp1 kbsna400sp2 
Technology        : kbAudDeveloper kbSNAServSearch kbSNAServ300 kbSNAServ400 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ400SP1 kbSNAServ400SP2 kbSNAServ300SP2 kbSNAServ300SP4
Version           : WINDOWS:3.0,3.0 SP1,3.0 SP2,3.0 SP3,3.0 SP4,4.0,4.0 SP1,4.0 SP2
Issue type        : kbbug
Solution Type     : kbfix

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