.getCurrentSession() returns a nullPointerException

[Rodrigo Bela]

Gentleman,

I have a web application that uses hibernate 3.0.3 withi this properties:

   		<property name="show_sql">false</property>
		<property name="dialect">org.hibernate.dialect.OracleDialect</property>
		<property name="hibernate.session_factory_name">SessionFactory</property>
		<property name="hibernate.connection.release_mode">auto</property>
		<property name="hibernate.transaction.flush_before_completion">false</property>
		<property name="hibernate.transaction.auto_close_session">false</property>
		<property name="hibernate.transaction.factory_class">org.hibernate.transaction.CMTTransactionFactory</property>
		<property name="hibernate.transaction.manager_lookup_class">
			org.hibernate.transaction.WeblogicTransactionManagerLookup
		</property>
		<property name="hibernate.query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</property>
 

and, sometimes a need to recover the current session doing this:

 
            SessionFactory lFactory = (SessionFactory) new InitialContext().lookup("SessionFactory");
            return lFactory.getCurrentSession();
   

The problem:

This code stop working for some reason that I don't understand.
I tried to debug the code and I realize that: the first calls of this method works with no problem. But For some reason the session is closed and them the .getCurrentSession(); returns a nullPointer exception.

My Log file says these:

2010-01-05 15:57:47,501 DEBUG [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (CacheSynchronization.java:68) - transaction after completion callback, status: 4
2010-01-05 15:57:47,501 DEBUG [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (JDBCContext.java:243) - after transaction completion
2010-01-05 15:57:47,501 DEBUG [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (SessionImpl.java:399) - after transaction completion
2010-01-05 15:57:47,501 DEBUG [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (CacheSynchronization.java:75) - automatically closing session
2010-01-05 15:57:47,501 DEBUG [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (SessionImpl.java:336) - automatically closing session
2010-01-05 15:57:47,501 DEBUG [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (SessionImpl.java:265) - closing session
2010-01-05 15:57:47,501 ERROR [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' (AutenticadorServlet.java:89) - [Erro em AutenticadorServlet] - java.lang.NullPointerExceptionjava.lang.NullPointerException    

Can someone help-me please?

[Rodrigo Bela]

In fact, this problem is caused by another problem on weblogic server.

If you have any similar problem try to debug your application line-by-line.