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Q153850: BUG: Access Driver DBQ=, DefaultDir= Incorrect with Large mdb

Article: Q153850
Product(s): Open Database Connectivity (ODBC)
Version(s): WINDOWS:3.4
Operating System(s): 
Keyword(s): kbBug kbISS
Last Modified: 27-JUL-2001

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The information in this article applies to:

- Microsoft Open Database Connectivity, version 3.4 
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SUMMARY
=======

If the path to an mdb file is over 85 bytes, then after a SQLDriverConnect call,
the ends of the DBQ= and DefaultDir= strings in the szConnStrOut parameter will
be overwritten.

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

If you have an mdb file in a deeply nested directory whose path exceeds 85
bytes, such as the following:

  c:\nested01\nested02\nested03\nested04\nested05\nested06\nested07\nested
  08\nested09\general.mdb

and if you create a data source on it, then, after a SQLDriverConnect using that
data source, the szConnStrOut variable will have two problems:

1. The end of the DBQ= string will be overlaid with the literal DBQ.

2. The end of the DefaultDir= string will be overlaid with the literal
  DefaultDir

STATUS
======

Microsoft has confirmed this to be a problem in the ODBC Access 3.40.2505
driver. Microsoft is researching this problem and will post new information here
in the Microsoft Knowledge Base as it becomes available.

WORKAROUND
==========

To work around this problem, move the mdb file to a directory that has a shorter
path name.

Additional query words: 3.40.2505

======================================================================
Keywords          : kbBug kbISS 
Technology        : kbAudDeveloper kbODBCSearch
Version           : WINDOWS:3.4
Issue type        : kbbug

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