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tstrick4 21 posts Joined 04/12
07 Nov 2013
ODBC and MS Access DSN-less connection VB

I have succesfully set up an Access front-end that links tables from a Teradata database.  Everything works fine when I have the tables linked through a DSN.  I am trying to set up a DSN-less connection, but I am encountering the following error:  "Reserved Error (-7778): there is no message for this error"
My code is below.  The code below uses a method that deletes the table definition and then appends a new one.  I have also tried using the TableDef RefreshLink method and am getting the same error.  I also understand that the ODBC connection string for Teradata should start with "Provider=Teradata", but when I use Provider I get prompted with the DSN selection box, so I have been using "Driver=Teradata".

Option Compare Database

'//Name     :   AttachDSNLessTable
'//Purpose  :   Create a linked table to a database without using a DSN
'//     stLocalTableName: Name of the table that you are creating in the current database
'//     stRemoteTableName: Name of the table that you are linking to on the SQL Server database
'//     stServer: Name of the SQL Server that you are linking to
'//     stDatabase: Name of the SQL Server database that you are linking to
'//     stUsername: Name of the SQL Server user who can connect to SQL Server, leave blank to use a Trusted Connection
'//     stPassword: SQL Server user password
Function AttachDSNLessTable(stLocalTableName As String, stRemoteTableName As String, stServer As String, stDatabase As String, Optional stUsername As String, Optional stPassword As String)
    On Error GoTo AttachDSNLessTable_Err
    Dim td As TableDef
    Dim stConnect As String
    For Each td In CurrentDb.TableDefs
        If td.Name = stLocalTableName Then
            CurrentDb.TableDefs.Delete stLocalTableName
        End If
    stConnect = "ODBC;Driver=Teradata;DBCName=" & stServer & ";Database=" & stDatabase & ";Uid=" & stUsername & ";Pwd=" & stPassword

    Set td = CurrentDb.CreateTableDef(stLocalTableName, dbAttachSavePWD, stRemoteTableName, stConnect)
    CurrentDb.TableDefs.Append td
    AttachDSNLessTable = True
    Exit Function

    AttachDSNLessTable = False
    MsgBox "AttachDSNLessTable encountered an unexpected error: " & Err.Description

End Function


tstrick4 21 posts Joined 04/12
07 Nov 2013

Sorry, should have mentioned that I'm in Access 2010 and using the TD version of the ODBC driver

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