ODP.NET和TransactionScope

微软提供oracle的驱动默认是不支持TransactionScope，除非安装oracle相应的程序，但是odp.net即oracle提供驱动不存在此类问题，

namespace OracleTransactionScopeApp
{
    using System;
    using System.Data;
    using Oracle.DataAccess.Client;
    using System.Transactions;
    using System.Data.Common;
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                using (TransactionScope tran = new TransactionScope())
                {
                    ExampleDao dao = new ExampleDao();
                    dao.Excute1();
                    dao.Excute2();
                    dao.Excute3();
                    tran.Complete();
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
            Console.ReadLine();
        }
    }

    public class ExampleDao
    {
        protected void Excute(Action<IDbCommand> action)
        {
            using (OracleConnection con = new OracleConnection("Password=\"password\";User ID=userid;Data Source=database;"))
            {
                using (OracleCommand com = con.CreateCommand())
                {
                    try
                    {
                        con.Open();
                        action(com);
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex);
                    }
                    finally
                    {
                        con.Close();
                    }
                }
            }
        }

        public void Excute1()
        {
            this.Excute(com =>
            {
                com.CommandText = "select sysdate from dual";
                Console.WriteLine(com.ExecuteScalar());
                Console.WriteLine(Transaction.Current.TransactionInformation.LocalIdentifier);
            }
            );
        }

        public void Excute2()
        {
            this.Excute(com =>
            {
                com.CommandText = "select sysdate from dual";
                Console.WriteLine(com.ExecuteScalar());
                Console.WriteLine(Transaction.Current.TransactionInformation.LocalIdentifier);
            });
        }

        public void Excute3()
        {
            this.Excute(com =>
            {
                com.CommandText = "select sysdate from dual";
                Console.WriteLine(com.ExecuteScalar());
                Console.WriteLine(Transaction.Current.TransactionInformation.LocalIdentifier);
            });
        }
    }
}

  但是在使用的时候发现一个小问题，当数据库服务器是Oracle11时，客户端是Oracle10，而程序一直报用户名和密码错误，在查询相关资料后，发现oracle11的密码可能区分大小写的。解决方式，一个是设置数据库密码不区分大小写，第二个就是在密码上加上引号。

 

 引用：

Thread: "ORA-1017: invalid username/password; logon denied"