XSU error oracle.xml.sql.OracleXMLSQLException: Conversion to String failed

Question

Appication Server: 10g, Database: Oracle 9i and Oracle 10g
I have a table 'sw_icd2' in the database that has one column of XMLType.
The code below, attempts to query this table as 'select * from sw_icd2' and display the result. I was able to execute this query in sqlplus.
But when I run a program using XSU in JDeveloper:
OracleXMLQuery qry = new OracleXMLQuery(conn, "select * from sw_icd2");
XMLDocument domDoc = (XMLDocument)qry.getXMLDOM();
domDoc.print(System.out);
StringWriter s = new StringWriter(10000);
domDoc.print(new PrintWriter(s));
System.out.println(s.toString());
qry.close();
I get the following Error:
"oracle.xml.sql.OracleXMLSQLException: Conversion to String failed"
Any ideas on how I can resolve this issue? Your help would be appreciated.
Thanks!

Answer 1

Okay, it looks like the problem has something to do with the TIMESTAMP data type in tables.
oracle.xml.sql.query.OracleXMLQuery can't seem to handle tables with the TIMESTAMP data type.
this code ran fine on my machine :
import oracle.jdbc.driver.*;
import oracle.xml.sql.query.OracleXMLQuery;
import java.lang.*;
import java.sql.*;
public class testXMLSQL {
     public static void main(String[] args) {
try {
// Create the connection
System.out.println("before getConnection ");
Connection conn = getConnection("scott","tiger");
System.out.println("after getConnection ");
// Create the query class
OracleXMLQuery qry = new OracleXMLQuery(conn, "SELECT * FROM EMP");
System.out.println("after OracleXMLQuery object created ");
// Get the XML string
String str = qry.getXMLString();
// Print the XML output
System.out.println("The XML output is:\n"+str);
// Always close the query to get rid of any resources..
qry.close();
} catch(SQLException e) {
System.out.println(e.toString());
// Get the connection given the user name and password.!
private static Connection getConnection(String username,
String password)
throws SQLException
// register the JDBC driver..
DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
// Create the connection using the OCI8 driver
Connection conn =
DriverManager.getConnection(
"jdbc:oracle:thin:@<server_name>:1521:<sid>",
username,password);
return conn;
Then I created another table :
create table emp_test as select * from emp;
added a timestamp to it :
alter table emp_test add (time timestamp(6));
and filled it with timestamp information :
update emp_test set time = timestamp'2005-09-22 09:26:50.124';
ran the same code but changed the SQL to :
"SELECT * FROM EMP_TEST"
and got the error message :
The XML output is:
<?xml version = '1.0'?>
<ERROR>oracle.xml.sql.OracleXMLSQLException: Conversion to String failed</ERROR>
looks like bug in OracleXMLQuery object??