Article: Q257759
Product(s): Microsoft SNA Server
Version(s): WINDOWS:4.0,4.0 SP1,4.0 SP2,4.0 SP3
Operating System(s):
Keyword(s): kbSNA400sp4fix kbSNA400PreSP4fix
Last Modified: 13-JUN-2001
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The information in this article applies to:
- Microsoft SNA Server, versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3
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SYMPTOMS
========
The TN5250 Service may end unexpectedly when a TN5250 client disconnects. This
problem occurs when you use the WRQ Reflections TN5250 client, although it can
also occur with other client emulators.
When the failure occurs, a Ddrwtsn32.log file indicates that a hard-coded
breakpoint occurred. For example:
Application exception occurred:
App: obj\i386\tn5250.exe (pid)
When: (date) (time)
Exception number: 80000003 (hardcoded breakpoint)
[...]
State Dump for Thread Id 0x1b9
eax=00000000 ebx=0110fc74 ecx=00000085 edx=0110fbe8 esi=78022b9a edi=0110fbea
eip=77f762e8 esp=0110fb14 ebp=0023c951 iopl=0 nv up ei pl nz ac po nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000216
[...]
function: DbgBreakPoint
FAULT ->77f762e8 cc int 3
77f762e9 c3 ret
77f762ea 8bc0 mov eax,eax
*--- Stack Back Trace ----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
0023c951 00000000 00000000 00000000 00000000 00000000 ntdll!DbgBreakPoint
00000000 00000000 00000000 00000000 00000000 00000000 tn5250!nosymbols
CAUSE
=====
A timing window can occur during client shutdown processing when an outstanding
TEST_RTS_AND_POST verb is cancelled and TP_ENDED is called twice in error. When
the second TP_ENDED returns an error, the TN5250 Service may force a hard-coded
breakpoint, causing the process to end.
RESOLUTION
==========
To resolve this problem, obtain the latest service pack for SNA Server 4.0. For
additional information, click the following article number to view the article
in the Microsoft Knowledge Base:
Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack
STATUS
======
Microsoft has confirmed that this is a problem in Microsoft SNA Server version
4.0, 4.0 SP1, 4.0 SP2 and 4.0 SP3.
This problem was first corrected in SNA Server 4.0 Service Pack 4.
Additional query words:
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Keywords : kbSNA400sp4fix kbSNA400PreSP4fix
Technology : kbAudDeveloper kbSNAServSearch kbSNAServ400 kbSNAServ400SP1 kbSNAServ400SP2 kbSNAServ400SP3
Version : WINDOWS:4.0,4.0 SP1,4.0 SP2,4.0 SP3
Issue type : kbbug
Solution Type : kbfix
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