SNA Server Fails to Send Data to DSPU After an Outage (170996)
The information in this article applies to:
- Microsoft SNA Server 2.11 SP2, when used with:
- the operating system: Microsoft Windows NT
- Microsoft SNA Server 3.0, when used with:
- the operating system: Microsoft Windows NT
- Microsoft SNA Server 3.0 SP1, when used with:
- the operating system: Microsoft Windows NT
This article was previously published under Q170996 SYMPTOMS
Under certain circumstances, like a link outage between SNA Server and a
Downstream System, SNA Server may fail to send host data to the downstream
System on the SSCP-LU session. Sessions or applications on the downstream
system then seem to hang, waiting for data.
CAUSE
We recently introduced a queue within the SNA Server service to ensure
that requests from the Host on the LU-SSCP session were handled serially.
Unfortunately in one case this queue is not cleared. The particular case
is when the SNA Server service receives a request from the host when the
downstream session or application is not ready to receive data. The EXR
or -RSP generated was not routed through the DFC layer (where the queue
was managed).
STATUS
Microsoft has confirmed this to be a problem in SNA Server version 2.11
Service Pack 2, 3.0 and 3.0 Service Pack 1. A fix to this problem is in
development, but has not been regression-tested and may be destabilizing
in production environments.
Microsoft does not recommend implementing this fix at this time. Contact
Microsoft Product Support Services for more information on the
availability of this fix.
| Modification Type: | Major | Last Reviewed: | 6/24/2004 |
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| Keywords: | kbbug kbfix KB170996 |
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