VS2010 + Oracle driver: ORA-12154: TSN:could not resolve the connect identifier specified

Question

I am using:

• Visual Studio 2010
• .Net Framework Data Provider for Oracle
• Oracle Developer Tools for Visual Studio (from Oracle\'s website)

Answer 1

The code that I´m using is the above.

P.S.: I´ve tested many times. Using Visual Studio .Net 2010 (VB.Net 2010).

Dim conn As New Odbc.OdbcConnection
Dim cmd As New Odbc.OdbcCommand
Dim drResult As Odbc.OdbcDataReader
Dim connString As String
Dim QuerySQL As String

connString = "Driver={Microsoft ODBC for Oracle};CONNECTSTRING=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ORACLEDB01)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORACLE_INSTANCE_NAME)));Uid=john;Pwd=mypassword;"
QuerySQL = "select first_name, last_name from employees where id = 28"

conn.ConnectionString = connString
conn.Open()
cmd.Connection = conn
cmd.CommandText = QuerySQL
drResult = cmd.ExecuteReader()

While drResult.Read
    TextBox1.Text = TextBox1.Text & drResult("last_name") & ", " & drResult("first_name") & Environment.Newline
End While
drResult.Close()