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Q326817: FIX: "Reserved Error (-7743)" Error Message with ODBC for DB2

Article: Q326817
Product(s): Microsoft SNA Server
Version(s): 
Operating System(s): 
Keyword(s): kbhis2000 kbhis2000bug
Last Modified: 30-JUL-2002

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The information in this article applies to:

- Microsoft Host Integration Server 2000 
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SYMPTOMS
========

When you try to select DB2 tables that contain fields that are specified as
SMALLINT, you may receive the following error message:

  Reserved Error (-7743); there is no message for this error.

This behavior occurs only if you are using the ODBC Driver for DB2 that comes
with Host Integration Server 2000 (HIS). SNA Server 4.0 does not experience this
problem.

CAUSE
=====

When an application calls the ODBC SQLGetData function, the ODBC Driver for DB2
incorrectly returns a 4-byte value for the data type SMALLINT. The SMALLINT data
type should return a 2-byte value.

RESOLUTION
==========

Host Integration Server 2000
----------------------------

A supported fix is now available from Microsoft, but it is only intended to
correct the problem that is described in this article. Only apply it to systems
that are experiencing this specific problem. This fix may receive additional
testing. Therefore, if you are not severely affected by this problem, Microsoft
recommends that you wait for the next Host Integration Server 2000 service pack
that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information about support costs, visit the following Microsoft
Web site:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls
may be canceled if a Microsoft Support Professional determines that a specific
update will resolve your problem. The usual support costs will apply to
additional support questions and issues that do not qualify for the specific
update in question.

The English version of this fix has the file attributes (or later) that are
listed in the following table. The dates and times for these files are listed in
coordinated universal time (UTC). When you view the file information, it is
converted to local time. To find the difference between UTC and local time, use
the Time Zone tab in the Date and Time tool in Control Panel.

  Date         Time   Version      Size      File name
  ---------------------------------------------------------
  18-Mar-2002  23:19  5.0.0.836    876,816   Mseidb2d.dll       

NOTE: Because of file dependencies, the most recent fix that contains the above
files may also contain additional files.



STATUS
======

Microsoft has confirmed that this is a problem in Host Integration Server 2000.

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

This error occurs when the underlying Jet engine tries to retrieve information
about the indexes of the table by using SQLStatistics, and then later tries to
retrieve the data in a field by using SQLGetData.

A field definition may be the folowing: 
           Name: Type
           Size: Smallint

The following is the result of calling SQLGetdata in the ODBC Test application
(ODBCTE32.EXE in the Microsoft ODBC Software Development Kit (SDK)):

In: Statementhandle = 0x009D1BF0, ColumnNumber = 7, 
TargetType = SQL_C_DEFAULT=99, TargetValuePtr = 0x001552B0, BufferLength = 12, 
StrLen_or_IndPtr = 0x00172E88
Return: SQL_SUCCESS=0
Out:*TargetValuePtr = 0x03000000, *StrLen_or_IndPtr = 4

The Length of the SMALLINT data type is incorrectly returned as a 4-byte value;
the value of Length should be only 2 bytes.

Additional query words: 7743 ODBC SQLGetData DB2

======================================================================
Keywords          : kbhis2000 kbhis2000bug 
Technology        : kbAudDeveloper kbHostIntegServ2000
Version           : :
Issue type        : kbbug
Solution Type     : kbfix

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

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