SNA Server Events 94 and 592 Fill Up Application Log (138860)


The information in this article applies to:

  • Microsoft SNA Server 2.0, when used with:
    • the operating system: Microsoft Windows NT
  • Microsoft SNA Server 2.1, when used with:
    • the operating system: Microsoft Windows NT
  • Microsoft SNA Server 2.11, when used with:
    • the operating system: Microsoft Windows NT
This article was previously published under Q138860

SYMPTOMS

When an APPC transaction program (TP) issues a RECEIVE_ALLOCATE which times out (due to the APPC TP's Timeout value expiring), the Windows NT application log fills up with the following SNA Server events:
Event 94: APPC remote conversation start failed

Event 592: Receive Allocate has timed out

CAUSE

This problem occurs when you run an APPC TP for a long time and the APPC TP is designed to periodically re-issue a RECEIVE_ALLOCATE call even though no incoming conversation startup request arrives for the TP.

SNA Server always logs these events, regardless of what default audit log level you configure in the Logs dialog box that appears in SNA Server Admin when you choose Logs from the Options menu.

RESOLUTION

To resolve this problem you may obtain an update from Microsoft or work around the problem as described below.

Update

Obtain the update to SNA Server 2.11 which reduces the audit log level of event 94 and event 582. To prevent these events from logging, you must set the default audit log level to Significant System Events in the Logs dialog box by choosing Logs from the Options menu in SNA Admin.

NOTE: When SNA Server is installed, the default audit log level is already set for Significant System Events.These events are still logged if the SNA Server logging level is set for General Information Messages or Detailed Problem Analysis.

Workaround

To work around this problem and prevent the events from being logged, increase the Timeout parameter of the TP within the registry. The Timeout parameter determines the time that a RECEIVE_ALLOCATE waits for an incoming attach message before returning an error. For manually started invokable TPs, the Timeout parameter is configured in the registry under the HKEY_LOCAL_MACHINE subtree. If the TP is written as an application, the Timeout value is found under: 
   SYSTEM\CurrentControlSet\Services\SnaBase\Parameters
      \TPs\<tpname>\Parameters
where <tpname> is the name of the transaction program. If the TP is written as a Windows NT service, the Timeout value can be found under: 
   SYSTEM\CurrentControlSet\Services\<tpname>\Parameters
where <tpname> is the name of the transaction program. 
   Value Name: Timeout
   Data Type:  REG_DWORD
   Value:      <time in milliseconds>
If there is no entry configured, the timeout defaults to infinite, so the RECEIVE_ALLOCATE never times out and Event 94 and 592 do not occur.

STATUS

Microsoft has confirmed this to be a problem in SNA Server for Windows NT. This problem was corrected in the latest SNA Server for Windows NT, 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

Modification Type:MajorLast Reviewed:12/5/2003
Keywords:kbbug kbfix KB138860
©2003 Microsoft Corporation. All rights reserved.