c#连接oracle数据库代码

一、安装oracle客户端程序

如果是windows版本可以到这里下载

http://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/winsoft.html

配置环境变量

一共设置以下三个环境变量（以解压缩目录c:\instantclient为例）

环境变量名                              变量值

path                                 c:\instantclient

TNS_ADMIN                            c:\instantclient

NLS_LANG                             SIMPLIFIED CHINESE_CHINA.ZHS16GBK

创建C#控制台项目.首先引用system.oracle.dll.

下面是一个数据库连接类DbConn.

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OracleClient;
namespace folokmanager
{
    class DbConn
    {
        private String Source;
        private String UserID;
        private String Password;

         public DbConn()
        {

            //数据源字符串其中192.168.1.21是你oracle数据库的机器ip,port是你oracle数据库的端口号,home2是你oracle数据库的服务名
            Source = "(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.21)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=home2)))";
            UserID = "system";           //用户名字符串
            Password = "a1b2c3d4";  //密码
        }

        public OracleConnection GetConn()
        {
            OracleConnection OracleConn = new OracleConnection("Data Source=" + Source + "; User Id=" + UserID + ";Password=" + Password + ";Integrated Security=no;");
           OracleConn.Open();
            return OracleConn;
        }
    }
}