SNABASE Hangs When 256th Process Added to Internal Process Table (188893)
The information in this article applies to:
- Microsoft SNA Server 3.0
- Microsoft SNA Server 3.0 SP1
- Microsoft SNA Server 3.0 SP2
- Microsoft SNA Server 3.0 SP3
- Microsoft SNA Server 4.0
- Microsoft SNA Server 4.0 SP1
This article was previously published under Q188893 SYMPTOMS
The Control Panel Services tool may indicate that the SnaBase
service is
not running even though Snabase.exe appears in the Windows NT Task
List. If
you attempt to stop the SnaBase service from an MS-DOS command
prompt when
it is in this state, it results in an error message indicating
that the
service cannot be controlled in this state.
CAUSE
The Snadmod.dll file (running underneath the SnaBase service)
keeps track
of each SNA application that is running on a system in a table
that can
contain up to 255 entries. This problem can occur if the table is
full and
a two hundred fifty sixth entry is added to the table. The
addition of the
two hundred fifty sixth entry to a table defined for 255 entries
causes
memory owned by other SNA Server processes to be overwritten,
which can
cause unpredictable results. In this case, the result was that the
SnaBase
service stopped responding and could no longer respond to
requests.
RESOLUTIONSNA Server 3.0To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack
SNA Server 4.0
This problem was corrected in the latest Microsoft SNA Server
version 4.0
U.S.
Service Pack. For information on obtaining this Service Pack,
query on the
following word in the Microsoft Knowledge Base (without the
spaces):
S E R V P A C K STATUSMicrosoft has confirmed that this is a problem in SNA Server, versions 3.0, 3.0 SP1, 3.0SP2, 3.0 SP3, 4.0, and 4.0 SP1. This problem was first corrected in SNA Server 3.0 Service Pack 4.MORE INFORMATION
Although this problem can potentially occur on an SNA Server
system, the only reported occurrence of this problem was on Windows NT clients
for SNA Server. In this case, the clients were no longer able to accept
new connections to process incoming APPC requests.
The table that is used to track the active SNA applications should
rarely reach 255 entries because it is rare to have 255 distinct, active
SNA applications on a single SNA Server or client.
| Modification Type: | Minor | Last Reviewed: | 4/25/2005 |
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| Keywords: | kbbug kbfix KB188893 kbAudDeveloper |
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