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Q293780: Type-Ahead Disabled in Upgrading to SNA Server 4.0 SP3 or Later

Article: Q293780
Product(s): Microsoft SNA Server
Version(s): 4.0 SP3,4.0 SP4
Operating System(s): 
Keyword(s): kbDSupport sna4 kbsna400sp3
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft SNA Server, versions 4.0 SP3, 4.0 SP4 
- Microsoft Host Integration Server 2000 
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SYMPTOMS
========

When utilizing the SNA Server 3270 Applet, the user's keystrokes are ignored
when the keyboard is in an inhibited state (also known as an "X clock"). Users
are unable to type keystrokes until the keyboard-inhibited state has been
cleared.

CAUSE
=====

During an upgrade of SNA Server to either SNA version 4.0 Service Pack (SP) 3,
version 4.0 SP4, or Host Integration Server (HIS) 2000, the 3270 Applet creates
a Win3270.ini. file from the [SnaServerWin3270] section of the Win.ini file. The
problem occurs if type-ahead is not explicitly defined in the Win.ini file. The
3270 Applet adds a "typeahead=" setting to the Win3270.ini file, which disables
the type-ahead feature.

Sample Win3270.ini File
-----------------------

[SnaServerWin3270]
AutoConnect=
LUHostCountry=United States (037)
LinkType=MS SNA Server
LUOrPoolName=DEMOPOOL
TNHostAddr=TESTSNASERVER
TNHostPort=23
TNModel=IBM-3278-2-E
TNDevice=
FTSHostProgram=
FTSParams=
XFRParams=
WindowLeft=167
WindowTop=118
WindowRight=935
WindowBottom=655
ShowWindow=1
WindowMaxX=-1
WindowMaxY=-1
ScriptName=Logon.lsc
AutoLogonScript=
Typeahead=
ConfigBufferSize=3643

WORKAROUND
==========

To work around the problem, edit the Win3270.ini file. Change the blank value of
the "typeahead=" line to "typeahead=1" or remove the entire "typeahead=" line.

The default locations for the Win3270.ini file are:

SNA Server 4.0, SNA Server 4.0 Service Pack 1, and SNA Server 4.0 Service Pack 2

  Only the settings in the WIN.ini file (which is located in the Windows
  directory) are used.

SNA Server 4.0 Service Pack 3

  Windows 95/Windows 98 = C:\Windows\Application Data\Microsoft\SNA Server
  Windows NT = C:\WINNT\Profiles\user name\Application Data\Microsoft\SNA
  Server
  Windows 2000 C:\Documents and Setting\user name\Application Data\Microsoft\SNA
  Server

Host Integration Server 2000

  Windows 95/Windows 98 = C:\Windows\Application Data\Microsoft\Host
  Integration Server
  Windows NT = C:\Profiles\<user name>\Application Data\Microsoft\Host
  Integration Server
  Windows 2000 C:\Documents and Setting\<user name>\Application
  Data\Microsoft\Host Integration Server

STATUS
======

Microsoft has confirmed this to be a problem in SNA Server 4.0 SP3, SNA Server
4.0 SP4, and Host Integration Server 2000.


MORE INFORMATION
================

In SNA Server 4.0 SP3 and later, the Applet settings were moved from the Win.ini
file to the Win3270.ini file (for the 3270 Applet) and Win5250.ini (for the 5250
Applet) into the user's profile directory. NOTE: By default, type-ahead is
internally set to "enabled" and is not defined in the Win.ini file.

If Win3270.ini does not exist when the Applet is started, the Applet will read
any existing settings from Win.ini to create a new Win3270.ini file. If the
type-ahead setting is not defined in the Win.ini file, the Applet will write a
"typeahead=" blank parameter into the Win3270.ini file.

If the type-ahead parameter is explicitly defined in Win.ini, this same value is
correctly added to Win3270.ini.

If the Win.ini file does not have the [SnaServerwin3270] section, the 3270 Applet
correctly writes a default Win3270.ini file that does not have "typeahead"
explicitly defined. In this case, type-ahead is enabled and will work
correctly.

For additional information, click the article number below to view the article in
the Microsoft Knowledge Base:

  Q165851 Support SNA Server 3270 Applet Keyboard Type-Ahead

Additional query words: typeahead, type ahead, type-ahead

======================================================================
Keywords          : kbDSupport sna4 kbsna400sp3 
Technology        : kbAudDeveloper kbSNAServSearch kbHostIntegServ2000 kbSNAServ400SP3 kbSNAServ400SP4
Version           : :4.0 SP3,4.0 SP4

=============================================================================

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