Error when create XMLType object with JDBC connection

Question

Hello, I try to get an XMLType object with JDBC, but it doesn't work. Can somebody help me?
My code is :
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@"+"a02w03:1521:PROJET", "scott", "tiger");
OraclePreparedStatement stmt = (OraclePreparedStatement) conn.prepareStatement("select xmldoc from cv_col");
ResultSet rset = stmt.executeQuery();
OracleResultSet orset = (OracleResultSet) rset;
while(orset.next())
OPAQUE o = orset.getOPAQUE(1);
System.out.println(o.getSQLTypeName());
XMLType poxml = XMLType.createXML(o);
My database table:
CREATE TABLE cv_col (
XMLDoc xmltype
Execution: The SQL type name "SYS.XMLTYPE" is write and then I obtain the error:
Exception in thread main
java.lang.NoSuchMethodError: java.lang.String oracle.jdbc.internal.OracleConnection.getProtocolType()
     at oracle.xdb.XMLType.initConn(XMLType.java:2072)
     at oracle.xdb.XMLType.<init>(XMLType.java:903)
     at oracle.xdb.XMLType.createXML(XMLType.java:493)
     at Prog.main(Prog.java:26)
Process exited with exit code 1.
Thank you, very much!

Answer 1

What platform are you using for the database, what are you running your code on.
Which database version are you working with.. What is your class path. What version of JDBC and OCI are in the client environment, eg what are CLASSPATH and PATH / LD_LIBRARY_PATH settings. Have you tested your code using a simple IDE like Oracle's JDeveloper or run it from directly from the command line.