Microsoft KB Archive/157219

= INETINFO Access Violation When Using SNA Server APPC =

Article ID: 157219

Article Last Modified on 11/26/2003

-

APPLIES TO


 * Microsoft SNA Server 3.0
 * Microsoft SNA Server 2.11 Service Pack 1
 * Microsoft Internet Information Server 2.0, when used with:
 * Microsoft Windows NT 4.0

-



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

When:

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):

S E R V P A C K

Additional query words: prodsna internet

Keywords: kbbug kbfix kbinterop kbprogramming KB157219

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.