Program: 68329
Project: 68329
Buggy source:
@Override public void buildSessions(){
  BaseEntityClassLoader becl=new BaseEntityClassLoader(parentClassLoader);
  XMLContext context=new XMLContext(new EclipseLinkObjectPersistenceRuntimeXMLProject(),becl);
  XMLUnmarshaller unmarshaller=context.createUnmarshaller();
  Project orProject=(Project)unmarshaller.unmarshal(new StringReader(KEYMAPPINGS_OR_PROJECT));
  DatasourceLogin login=new DatabaseLogin();
  login.setUserName(username);
  login.setPassword(password);
  ((DatabaseLogin)login).setConnectionString(url);
  ((DatabaseLogin)login).setDriverClassName(driver);
  Platform platform=new OraclePlatform();
  ConversionManager conversionManager=platform.getConversionManager();
  if (conversionManager != null) {
    conversionManager.setLoader(becl);
  }
  login.setDatasourcePlatform(platform);
  ((DatabaseLogin)login).bindAllParameters();
  orProject.setDatasourceLogin(login);
  Project oxProject=(Project)unmarshaller.unmarshal(new StringReader(KEYMAPPINGS_OX_PROJECT));
  login=(DatasourceLogin)oxProject.getDatasourceLogin();
  if (login != null) {
    platform=login.getDatasourcePlatform();
    if (platform != null) {
      conversionManager=platform.getConversionManager();
      if (conversionManager != null) {
        conversionManager.setLoader(becl);
      }
    }
  }
  ProjectHelper.fixOROXAccessors(orProject,oxProject);
  xrService.setORSession(orProject.createDatabaseSession());
  xrService.getORSession().dontLogMessages();
  xrService.setXMLContext(new XMLContext(oxProject));
  xrService.setOXSession(xrService.getXMLContext().getSession(0));
}

Fixed version (ground truth):
@Override public void buildSessions(){
  BaseEntityClassLoader becl=new BaseEntityClassLoader(parentClassLoader);
  XMLContext context=new XMLContext(new EclipseLinkObjectPersistenceRuntimeXMLProject(),becl);
  XMLUnmarshaller unmarshaller=context.createUnmarshaller();
  Project orProject=(Project)unmarshaller.unmarshal(new StringReader(KEYMAPPINGS_OR_PROJECT));
  DatasourceLogin login=new DatabaseLogin();
  login.setUserName(username);
  login.setPassword(password);
  ((DatabaseLogin)login).setConnectionString(url);
  ((DatabaseLogin)login).setDriverClassName(driver);
  Platform platform=new MySQLPlatform();
  ConversionManager conversionManager=platform.getConversionManager();
  if (conversionManager != null) {
    conversionManager.setLoader(becl);
  }
  login.setDatasourcePlatform(platform);
  ((DatabaseLogin)login).bindAllParameters();
  orProject.setDatasourceLogin(login);
  Project oxProject=(Project)unmarshaller.unmarshal(new StringReader(KEYMAPPINGS_OX_PROJECT));
  login=(DatasourceLogin)oxProject.getDatasourceLogin();
  if (login != null) {
    platform=login.getDatasourcePlatform();
    if (platform != null) {
      conversionManager=platform.getConversionManager();
      if (conversionManager != null) {
        conversionManager.setLoader(becl);
      }
    }
  }
  ProjectHelper.fixOROXAccessors(orProject,oxProject);
  xrService.setORSession(orProject.createDatabaseSession());
  xrService.getORSession().dontLogMessages();
  xrService.setXMLContext(new XMLContext(oxProject));
  xrService.setOXSession(xrService.getXMLContext().getSession(0));
}