/**
* Starts up the persistence manager.
*/
protected void startPersistenceManager() {
PersistenceDefinition persistenceDefinition = PersistenceDefinitionParser.
parse(new File(PERSISTENCE_DEFINITION));
List persistenceManagers = persistenceDefinition.getPersistenceManagers();
for (Iterator it = persistenceManagers.iterator(); it.hasNext();) {
PersistenceManagerDefinition manager = (PersistenceManagerDefinition)it.next();
if (manager.isActive()) {
m_persistenceManager = (PersistenceManager)startService(
m_loader, manager.getClassName(), persistenceDefinition);