Hi List, We have a VB .NET application which is using Oracle ODP.NET 9.2 version for the connectivity to the database. If the application is placed under the any folder name ends with ')', it crashes. Here is the Test sample code and the error message. Why does the oracle client depend on the folder name where the application resides? VB Code: Module Module1 Sub Main() Console.WriteLine("Starting...") Dim cnn As New Oracle.DataAccess.Client.OracleConnection("Password=funkadel1c;Pooling=false ; User ID=sis; Data Source=gabpro") Try cnn.Open() Console.WriteLine("Open") cnn.Close() Console.WriteLine("Close") Catch ex As Exception Console.WriteLine("Error") End Try Console.ReadLine() End Sub End Module Error: Oracle.DataAccess.Client.OracleException ORA-12154: TNS:could not resolve service name at Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx, Object src, String procedure) at Oracle.DataAccess.Client.OracleException.HandleError(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, Object src) at Oracle.DataAccess.Client.OracleConnection.Open() at ConsoleApplication2.Module1.Main() in C:\Documents and Settings\Raja\My Documents\Projects\ConsoleApplication2(2006)\ConsoleApplication2\Module1.vb: line 8