How to fill an oracle CLOB with a XML document using Unicode UTF8

Question

Hi,
I'm working with C# and oracle database v8.1.7 (release 3), and i'm having some problems to fill correctly an oracle CLOB parameter with XML document using UTF8 encoding.
It works fine with "Encoding.Unicode" but not with "Encoding.UTF8". The problem is that i can't use Unicode (UTF16) with oracle 8.
Can someone help me ? Thanks.
Here is my code.
OracleTransaction tx = conn.BeginTransaction();
OracleCommand cmd = conn.CreateCommand();
cmd.Transaction = tx;
cmd.CommandText = "declare xx clob; begin dbms_lob.createtemporary(xx, false, 0); :tempclob := xx; end;";
cmd.Parameters.Add(new OracleParameter("tempclob", OracleType.Clob)).Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
OracleLob tempLob = (OracleLob)cmd.Parameters[0].Value;
MemoryStream MemStrm = new MemoryStream();
XmlTextWriter writer = new XmlTextWriter(MemStrm, Encoding.UTF8);
writer.Formatting = Formatting.Indented;
WriteXMLExample(writer, "MSFT", 74.125, 5.89, 69020000);
writer.Close();
cmd.Parameters.Clear();
cmd.CommandText = "test_xml";                    
cmd.CommandType = CommandType.StoredProcedure;
tempLob.Write(MemStrm.GetBuffer(), 0, MemStrm.GetBuffer().Length );
tempLob.Position = 0;
cmd.Parameters.Add(new OracleParameter("xml_inout", OracleType.Clob)).Value = (OracleLob) tempLob;
cmd.ExecuteNonQuery();
Console.WriteLine( "Param 0 = " + cmd.Parameters[0].Value.ToString() );
tx.Commit();

Answer 1

Hi,
I'm working with C# and oracle database v8.1.7 (release 3), and i'm having some problems to fill correctly an oracle CLOB parameter with XML document using UTF8 encoding.
It works fine with "Encoding.Unicode" but not with "Encoding.UTF8". The problem is that i can't use Unicode (UTF16) with oracle 8.
Can someone help me ? Thanks.
Here is my code.
OracleTransaction tx = conn.BeginTransaction();
OracleCommand cmd = conn.CreateCommand();
cmd.Transaction = tx;
cmd.CommandText = "declare xx clob; begin dbms_lob.createtemporary(xx, false, 0); :tempclob := xx; end;";
cmd.Parameters.Add(new OracleParameter("tempclob", OracleType.Clob)).Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
OracleLob tempLob = (OracleLob)cmd.Parameters[0].Value;
MemoryStream MemStrm = new MemoryStream();
XmlTextWriter writer = new XmlTextWriter(MemStrm, Encoding.UTF8);
writer.Formatting = Formatting.Indented;
WriteXMLExample(writer, "MSFT", 74.125, 5.89, 69020000);
writer.Close();
cmd.Parameters.Clear();
cmd.CommandText = "test_xml";                    
cmd.CommandType = CommandType.StoredProcedure;
tempLob.Write(MemStrm.GetBuffer(), 0, MemStrm.GetBuffer().Length );
tempLob.Position = 0;
cmd.Parameters.Add(new OracleParameter("xml_inout", OracleType.Clob)).Value = (OracleLob) tempLob;
cmd.ExecuteNonQuery();
Console.WriteLine( "Param 0 = " + cmd.Parameters[0].Value.ToString() );
tx.Commit();