ORA-19011: Character string buffer too small

Question

my query
select to_clob(xmldata) from ei_output where id=1my java code...
       //load jdbc driver
            Class.forName("oracle.jdbc.driver.OracleDriver");
            // create connection
            c=DriverManager.getConnection(UI.jTxtConStr.getText(),UI.jTxtUsr.getText(),UI.jTxtPsw.getText());
            //create statement
            Statement stmt=c.createStatement();
            ResultSet rs=stmt.executeQuery(UI.jTxtAreaSQL.getText());//resulset pe baza a ceea ce e in TextArea din UI
            //get the result
            while(rs.next()){
                is=rs.getClob(1).getAsciiStream();
            }I need the ascii stream in order to do a transform provided by apache xalan...
what can I do about it? how can I get the ascii stream of the xmldata(xmltype)?

Answer 1

Maybe a possibility would be to let the query return an XMLType instead of a CLOB or VARCHAR2 and then you can do the transformation on the server in Java instead of on the database. We tried something similar for a PL/SQL procedure:
public Document getXML() {
try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
java.sql.Connection connecton =
DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL",
"scott", "tiger");
oracle.jdbc.OracleCallableStatement statement =
(oracle.jdbc.OracleCallableStatement)connecton.prepareCall("BEGIN \"WEBSERVICE\".TEST_XML(:1 ); END;");
statement.registerOutParameter(1, OracleTypes.OPAQUE,
"SYS.XMLTYPE");
statement.executeUpdate();
//Object out = statement.getObject(1);
XMLType xml = XMLType.createXML(statement.getOPAQUE(1));
statement.close();
System.out.println("out: " + xml);
return xml.getDOM();
} catch (Exception e) {
e.printStackTrace();
return null;
The WEBSERVICE.TEST_XML procedure returns data as an XMLType object.
Regards,
Ronald