Hibernate 3:

Mapping documents:

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

Oracle 10g:

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

hi list,
i call method from my action struts class, i'm using tomcat 5.0.28:

Session session = HibernateSessionFactory.currentSession();
Transaction tx = session.beginTransaction();
session.save(myObject);
tx.commit();
session.close();

i insert my Object to DB successfully, but when i want to execute my forward in action struts i got the following displayed error on page, but
when i remove the line "session.close();" page is displayed successfully:
exception

javax.servlet.ServletException: Session is closed
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
...................

cause mère

org.hibernate.SessionException: Session is closed
org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:131)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:49)
org.hibernate.transaction.JDBCTransactionFactory.beginTransaction(JDBCTransactionFactory.java:24)
org.hibernate.jdbc.JDBCContext.beginTransaction(JDBCContext.java:271)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1079)
ma.co.omnidata.intranet.metier.service.referentiel.ServicesRefCommun.getBuList(ServicesRefCommun.java:47)
ma.co.omnidata.intranet.presentation.action.contrat.ContratInitAction.execute(ContratInitAction.java:41)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1062)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)


thanks

You could have found an answer by looking in the FAQ, in the manual or searching as this is a common problem.

Hibernate does not automatically intializes all related collections. If it would your complete database could be loaded in some cases as a collection can have a relation to a relation to a relation .....

Read in the reference chapter (performance and lazy initialisation) and in the wiki.
a)
initialize using a query
b)
open session in view pattern
c)
initialize by traversing your collections.

Sebastian