//copy following program into console app and replace connection string and query string

using System;
using System.Collections.Generic;
using System.Text;
using System.Transactions;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;

namespace TransClient
{
    class Program
    {
      
       static void Main(string[] args)
       {
           ConnectToOracle();
           Console.WriteLine("Press any key to quit");
           Console.ReadKey();

       }
       
        //Try to connect to oracle database

        public static void ConnectToOracle()
        {
       
         /*
          VERSION: windows xp,sp2/.NET 2.0/oracle client 9i/Microsoft oledb provider/oracle oledb provider
         
NOTE:

            incase if data provider can't understand systx,provide COM+/ES context
              TransactionOptions to = new TransactionOptions();
               using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required,to,EnterpriseServicesInteropOption.Full))

        */         
        
            //using Microsoft oledb provider

            using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required))
            {

                OleDbConnection conn = new OleDbConnection();
    conn.ConnectionString = "Provider=MSDAORA.1;User ID=XXX;password=XXX;Data Source=oracleservername;Persist Security 
    Info=False";
                conn.Open();

          OleDbCommand cmd = new OleDbCommand("insert into XXX values('5')", conn);
                cmd.ExecuteNonQuery
                ts.Complete();
            }
      
            //using oracle oledb provider

            using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required))
            {

                OleDbConnection conn = new OleDbConnection();
                conn.ConnectionString = "Provider=ORAOLEDB.ORACLE.1;User ID=XXX;password=XXX;Data Source=oracleservername;Persist
                Security Info=False";
                conn.Open();
                OleDbCommand cmd = new OleDbCommand("insert into XXX values('5')", conn);
                cmd.ExecuteNonQuery();
                ts.Complete();
            }

        }

      
    }
}