I would use an actual DSN from ODBC. It looks like you're using handcrafted DSN for Access.

Setup DSN Instructions. Then you'll have a DSN name to use in your DBI string.

$dbh = DBI->connect('dbi:ODBC:DSN', 'user', 'password');
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Note: If you don't see Open Office Base as a option for a data source check out the Open Office Website for ODBC drivers.