不安装oracle 客户端连接oracle DDTeck连接语法

   try             {

                OracleConnection pConn = new OracleConnection("Host=myserver;SID=sde;UID=sde;PWD=orcl;License Path=C:\\devdll\\DDTek.lic");                 pConn.Open();                 OracleCommand pCmd = new OracleCommand("select * from test", pConn);                 OracleDataReader myOraRdr = pCmd.ExecuteReader();

                              

            }             catch (Exception ex)             {

            }