Exception Description: Unable to process XML tag [driver-class] with value

Question

Hi
I'm newbie with TopLink. I try to write a litle application with TopLink:
- First, I create a session.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<toplink-sessions version="11g Technology Preview 3 (11.1.1.0.0)" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<session xsi:type="database-session">
<name>dbsession</name>
<event-listener-classes/>
<logging xsi:type="toplink-log"/>
<primary-project xsi:type="xml">META-INF/tlMap.xml</primary-project>
<login xsi:type="database-login">
<platform-class>oracle.toplink.platform.database.oracle.Oracle10Platform</platform-class>
<user-name>dev</user-name>
<password>F6A3DA7BA187330D4E11A713C42FF833</password>
<sequencing>
<default-sequence xsi:type="table-sequence">
<name>Default</name>
</default-sequence>
</sequencing>
<driver-class>oracle.jdbc.OracleDriver</driver-class>
<connection-url>jdbc:oracle:thin:@//10.10.10.31:1521/devdb1</connection-url>
<bind-all-parameters>false</bind-all-parameters>
<struct-converters/>
</login>
</session>
</toplink-sessions>
- Second, I create a Java Application ( Application1.java):
package project2;
import java.sql.ResultSet;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;
import oracle.toplink.queryframework.DataModifyQuery;
import oracle.toplink.queryframework.SQLCall;
import oracle.toplink.queryframework.StoredProcedureCall;
import oracle.toplink.sessions.DatabaseSession;
import oracle.toplink.sessions.Session;
import oracle.toplink.tools.sessionconfiguration.XMLSessionConfigLoader;
import oracle.toplink.tools.sessionmanagement.SessionManager;
import oracle.toplink.util.SessionFactory;
public class Application1 {
public Application1() {
public static void main(String[] args) {
// new Application1();
String statement = "SELECT motdepasse,login FROM bou_courtier";
SessionManager sessionmanager = SessionManager.getManager();
System.out.println("test");
// SessionFactory sessionfactory = new SessionFactory("META-INF/sessions.xml","dbsession");
DatabaseSession session = (DatabaseSession)sessionmanager.getSession(new XMLSessionConfigLoader(),"dbsession",Thread.currentThread().getContextClassLoader());
// Session session = sessionfactory.acquireSession();
System.out.println("test");
SQLCall sqlcall = new SQLCall(statement);
session.executeNonSelectingCall(sqlcall);
ResultSet rs = sqlcall.getResult();
try {
while(rs.next()){
String strPass = rs.getString(1);
String strLogin = rs.getString(2);
System.out.println("Password :"+strPass+"---"+"Login :"+strLogin);
} catch (SQLException e) {
// TODO
- Third, I build and run Application1.java in Jdevelopper 11g preview 3. Sadly, the result is a error:
Exception in thread "main" Local Exception Stack:
Exception [TOPLINK-9003] (Oracle TopLink - 11g Technology Preview 3 (11.1.1.0.0) (Build 071207)): oracle.toplink.exceptions.SessionLoaderException
Exception Description: Unable to process XML tag [driver-class] with value [oracle.jdbc.OracleDriver].
Internal Exception: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
     at oracle.toplink.exceptions.SessionLoaderException.failedToLoadTag(SessionLoaderException.java:83)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildDatabaseLoginConfig(TopLinkSessionsFactory.java:408)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildLogin(TopLinkSessionsFactory.java:336)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildDatabaseSessionConfig(TopLinkSessionsFactory.java:182)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildSession(TopLinkSessionsFactory.java:168)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildTopLinkSessions(TopLinkSessionsFactory.java:117)
     at oracle.toplink.tools.sessionconfiguration.XMLSessionConfigLoader.load(XMLSessionConfigLoader.java:239)
     at oracle.toplink.tools.sessionmanagement.SessionManager.getSession(SessionManager.java:448)
     at oracle.toplink.tools.sessionmanagement.SessionManager.getSession(SessionManager.java:311)
     at project2.Application1.main(Application1.java:33)
Caused by: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
     at oracle.toplink.tools.sessionconfiguration.TopLinkSessionsFactory.buildDatabaseLoginConfig(TopLinkSessionsFactory.java:405)
     ... 8 more
Process exited with exit code 1.
Can you help me to debug this error. Many thanks
user615555

Answer 1

The internal error: "java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver"
is stating it can't find your driver jar file on the classpath. You'll need to check that you've included your Database driver in the list of libraries on your classpath.
Best Regards,
Chris