INETINFO Access Violation When Using SNA Server APPC (157219)
The information in this article applies to:
- Microsoft SNA Server 2.11
- Microsoft SNA Server 2.11 SP1
- Microsoft Internet Information Server 2.0, when used with:
- the operating system: Microsoft Windows NT
This article was previously published under Q157219 SYMPTOMS
When you run Microsoft Internet Information Server (IIS) version 2.0 and
use the HTTPODBC DLL to query a DB2 database using the StarQuest ODBC/DRDA
driver included with the Microsoft SNA Server 2.11 Windows NT client
software, the StarQuest ODBC driver uses an APPC session to communicate
with a host or AS/400 DB2 database.
Whenever a SQL error is encountered by the ODBC driver, or even after
a successful query response, the following access violation occurs:
App: exe\inetinfo.dbg <process id>
When: <date and time>
Exception number: c0000005 (access violation)
The Drwtsn32.log shows all the threads of the process; however, the log
does not indicate the thread that encountered the "FAULT."
CAUSE
This problem occurs when Wappc32.dll is unloaded while one of the
Snadmod.dll threads is executing the APPC routing procedure. The following
stack trace of the failure is observed, indicating that the Snadmod.dll
attempted to invoke a function that is no longer in memory:
> kb=24DFF1c, 24dff14, 24dff54
FramePtr RetAddr Param1 Param2 Param3 Function Name
024dff1c 01ffaf06 101541a8 025b0004 00000001 0x024dff54
024dff50 01fee05a 101541a8 00000001 00000000 SNADMOD!sepdq2_int+0x106
024dff78 01fee32e 024dffa8 024dffa2 024dffa6 SNADMOD!sbpdin_int+0x21a
024dffb8 77f04f4a 00000000 02028172 00000000 SNADMOD!sepdramp+0xde
024dffec 00000000 01fee250 00000000 00000000
KERNEL32!BaseThreadStart+0x51
SNADMOD!_sepdq2_int@8+0x100:
0x01ffaf00 51 push ecx
0x01ffaf01 57 push edi
0x01ffaf02 ff542420 call dword ptr [esp+20]
RESOLUTION
A hot fix to SNA Server 2.11 and 2.11 Service Pack 1 is available to
correct this problem.
STATUS
Microsoft has confirmed this to be a problem in SNA Server version 2.11
and 2.11 Service Pack 1.
This problem was corrected in the latest Microsoft SNA Server 2.11 U.S.
Service Pack. For information on obtaining the service pack, query on the
following word in the Microsoft Knowledge Base (without the spaces):
| Modification Type: | Major | Last Reviewed: | 11/26/2003 |
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| Keywords: | kbbug kbfix kbinterop kbprogramming KB157219 |
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