Oracle.DataAccess.Client如何处理xmltype字段

Question

c# vs2012 windows7 oracle11g服务端客户端字符集【SIMPLIFIED CHINESE_CHINA.US7ASCII】
原本是想解决 XMLTYPE字段里面中文乱码的问题的，使用datareader里面的中文全变成“？”，
现在想用Oracle.DataAccess.Client处理xmltype字段，网上找了方法，但是会报 ORA-06553:PLS-306 的错
using Oracle.DataAccess;
using Oracle.DataAccess.Types;
using Oracle.DataAccess.Client;
string conString = "Data Source =testascii;Persist Security Info=True;User ID=common;Password=common";
XmlDocument xmlDoc = new XmlDocument();
string strProperty = @"<root>钓鱼岛是中国的</root>";
xmlDoc.LoadXml(strProperty);
Oracle.DataAccess.Client.OracleConnection con = new Oracle.DataAccess.Client.OracleConnection(conString);
con.Open();
OracleXmlType cxml = new OracleXmlType(con,strProperty);
//OracleXmlType cxml = new OracleXmlType(con, xmlDoc);
Oracle.DataAccess.Client.OracleCommand cmd = new Oracle.DataAccess.Client.OracleCommand();
cmd.Connection = con;
cmd.CommandText = @"insert into d_test values(:nvar,SYS.XMLType(:xml))";
//Oracle.DataAccess.Client.OracleParameter p1 = new Oracle.DataAccess.Client.OracleParameter("nvar",OracleDbType.NVarchar2);
//Oracle.DataAccess.Client.OracleParameter p2 = new Oracle.DataAccess.Client.OracleParameter("xml", OracleDbType.XmlType);
//p1.Value = DateTime.Now.ToLongDateString();
//p2.Value = cxml;
cmd.Parameters.Add("nvar", OracleDbType.NVarchar2).Value = DateTime.Now.ToLongDateString();
cmd.Parameters.Add("xml", OracleDbType.XmlType).Value = cxml;
//cmd.Parameters.Add(p1);
//cmd.Parameters.Add(p2);
try
int count = cmd.ExecuteNonQuery();
if (count >= 1)
MessageBox.Show("ok");
else
MessageBox.Show("shit");
catch (System.Exception ex)
MessageBox.Show(ex.Message);
con.Close();
这种写法会报 ORA-06553:PLS-306: XMLTYPE..这个错误
这个如何解决呀

Answer 1

US7ASCII
U.S. 7-bit ASCII
US
7
ASCII
ASCII字符集是不包括中文的， 你使用的 NVARCHAR是 NATIONAL CHARACTER SET 的CHAR类型