概观

我想用Orcale替换Oracle.DataAccess.托管 DataAccess,但打开与后者的连接会引发ORA-12537网络会话文件结束异常.

异常消息/堆栈跟踪

{OracleInternal.Network.NetworkException(0x000030F9):ORA-12537:在OracleInternal.TTC.OraBufReader.Read的OracleInternal.TTC.OraBufReader.GetDataFromNetwork()中的OracleInternal.Network.ReaderStream.Read(OraBuf OB)上的Dateiende(布尔bIgnoreData) )OracleInternal.TTC.TTCProtocolNegotiation.ReadResponse()}中的OracleInternal.TTC.MarshallingEngine.UnmarshalUB1(Boolean bIgnoreData)

我正在尝试连接到Oracle 11g数据库,并且我的本地计算机上没有安装客户端.

工作测试应用程序(非托管)

使用Oracle.DataAccess 可以正常工作.

using System;
using Oracle.DataAccess.Client;

namespace App.Odp.Unmanaged
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            //dummy connection string. using SID 
            string connectionString = "User Id=***;password=***;Data Source=1.2.3.4:1521/sid01;";

            try
            {
                using (var conn = new OracleConnection(connectionString))
                {
                    conn.Open();
                    using (OracleCommand cmd = conn.CreateCommand())
                    {
                        cmd.CommandText = "select * from all_users";

                        using (OracleDataReader reader =     cmd.ExecuteReader())
                        {                            
                            Console.WriteLine("VisibleFieldCount: {0}", reader.VisibleFieldCount);
                            Console.WriteLine("HiddenFieldCount: {0}", …