DOCUMENT:Q243252  22-OCT-1999  [vbwin]
TITLE   :BUG: Converting Access97 MDB to Access 2000 Format Using DAO 3.6
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:6.0
OPER/SYS:
KEYWORDS:kbDAOsearch kbDatabase kbGrpDSVBDB kbDSupport kbDAO360bug

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Visual Basic Enterprise Edition for Windows, version 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

If you convert an Access97 (Jet 3.5) database to Access 2000 (Jet 4.0) format
using DAO 3.6 and then attempt to open it with Access 2000, a "Convert Database"
dialog box appears. This dialog box is misleading because the database is in JET
4.0 format.

RESOLUTION
==========

Although Access 2000 displays a dialog box indicating that the database needs to
be converted, the database actually is in Jet 4.0 format.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.

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

Create a new Visual Basic Standard EXE project and then paste the following code
in the General Declarations section and set a reference to DAO 3.6. This example
uses an Access97 Biblio.mdb:

   Sub Form_Click()

   Dim db As DAO.Database
   Set db = DBEngine(0).OpenDatabase("D:\Program Files\Microsoft Visual Studio\VB98\Biblio.mdb")
   Debug.Print db.Version
   db.Close

   dbPath = "D:\Program Files\Microsoft Visual Studio\VB98\"
   DBEngine.CompactDatabase "D:\Program Files\Microsoft Visual Studio\VB98\Biblio.mdb", _
                               "D:\Program Files\Microsoft Visual Studio\VB98\Biblio2k.mdb", _
                               dbLangGeneral, dbVersion40, dbLangGeneral

   Set db = DBEngine(0).OpenDatabase("D:\Program Files\Microsoft Visual Studio\VB98\Biblio2k.mdb")
   Debug.Print db.Version
   db.Close
   MsgBox "Conversion Done!"
   End Sub

Run the project and click the Form.

Alternatives to DAO 3.6 CompactDatabase for converting are:

 - Convert the database with JRO (Jet Replication objects) as shown in the
   Microsoft Knowledge Base article Q230501 mentioned in the REFERENCES section
   following. However, this still results in the same "Convert Database" dialog
   box when opening with Access 2000.

 - Create a new database with DAO 3.6 and import all objects from previous
   database.

REFERENCES
==========

For additional information, please click the article numbers below to view the
articles in the Microsoft Knowledge Base:

   Q230501 HOWTO: Compacting Microsoft Access Database via ADO

   Q141796 HOWTO: Identify the Jet Database Engine Components

   Q225048 INFO: Issues Migrating from DAO/Jet to ADO/Jet

   Q196809 PRB: CompactDatabase Method Requires Locale to Convert 2.0 MDB

Additional query words:

======================================================================
Keywords          : kbDAOsearch kbDatabase kbGrpDSVBDB kbDSupport kbDAO360bug 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB600Search kbVB600
Version           : WINDOWS:6.0
Issue type        : kbbug
Solution Type     : kbpending

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

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1999.