Yes indeed, here is the error ... the PersistenceManagerFactory should be the singleton not the PersistenceManager. Managers should be created and ended each time data-access is needed!
After u close a PersistenceManager u may not reuse it again ... and this is what was happening because your PersistenceManagerHelper was always returning the same instance! Let it always return a new PersistenceManager and your code will work! See => http://db.apache.org/jdo/api22/apidocs/javax/jdo/PersistenceManager.html#close() regards Hani -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
