SNA Server 2.11 Admin shows Inactive Status In Error (138864)


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 Q138864

SYMPTOMS

When viewing the status of an SNA Server connection or LUs using the SNA Server 2.11 Admin program, some connections or LUs may appear Inactive, even though they are actually Available, or in use. Also, the status of a connection or LUs may take several minutes before the correct status appears in Admin.

These problems tends to occur when you view an SNA Server that is configured with a large number of connections or 3270 LUs.

CAUSE

The Admin program internal buffer used to receives SNA Server status updates is being overrun. If an SNA Server is configured with a large number of connections and LUs off these connections, any status change causing a large number of update messages to flow to the Admin program can lead to this problem.

RESOLUTION

An update to the SNA Server Admin program increases an internal receive buffer queue from 4K to 8K. If an incorrect Inactive status still occurs, this internal buffer queue can be increased by creating and setting the ManageQueueSize registry value under the HKEY_CURRENT_USER subtree under the following subkey: 
   \Software\Microsoft\SNAServer\CurrentVersion \SnaAdmin

Value Name: ManageQueueSize
Data Type:  REG_DWORD
Data:       <number>
If this entry is not specified then it defaults to 8. Setting this value to 16 (decimal) will result in 16 * 1024 * 16 bytes ( 256KB ) being allocated.

Microsoft has updated the file <snaroot>\SYSTEM\SNAADMIN.EXE to correct this problem.

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 KB138864
©2003 Microsoft Corporation. All rights reserved.