Låsning af DB

Hej.

Jeg har en access database, som ofte bliver låst af min asp.net applikation.

Hvordan undgår jeg dette ?

Koden hvor jeg åbner db er følgende:
    Function FindValue(ByVal id As Integer, ByVal strField As String, ByVal strTable As String) As String
        Dim objConnection As OleDbConnection
        Dim objCommand As OleDbCommand
        Dim objDataReader As OleDbDataReader
        Dim strSQL As String
        objConnection = New OleDbConnection(ConfigurationSettings.AppSettings("connectionString") & Server.MapPath("./db/data.mdb"))
        objConnection.Open()
        strSQL = "SELECT " & strField & " FROM " & strTable & " where ID=" & id
        objCommand = New OleDbCommand(strSQL, objConnection)
        objDataReader = objCommand.ExecuteReader(CommandBehavior.CloseConnection)
        objDataReader.Read()
        Return objDataReader.GetString(0).ToString()
        objConnection = Nothing
        objDataReader.Close()
        objDataReader = Nothing
    End Function