[Solved] org.hibernate.HibernateException: No CurrentSessionContext configured

Hibernate requires a lot of configurations and sometimes you get weird exception and there is no clue that it’s because of some missing configuration.

org.hibernate.HibernateException: No CurrentSessionContext configured

I was working on a simple hibernate web application and getting below exception.

Copy
org.hibernate.HibernateException: No CurrentSessionContext configured!
	org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1012)
	com.journaldev.servlet.hibernate.GetEmployeeByID.doGet(GetEmployeeByID.java:31)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

When I looked at the source code, the statement that was throwing the exception was;

Copy
Session session = sessionFactory.getCurrentSession();

My Hibernate configuration was like this:

hibernate.cfg.xml

Copy
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
		"http://hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.connection.datasource">java:comp/env/jdbc/MyLocalDB</property>

        <!-- Mapping with model class containing annotations -->
	<mapping class="com.journaldev.servlet.hibernate.model.Employee"/>
    </session-factory>
</hibernate-configuration>

Fix for org.hibernate.HibernateException: No CurrentSessionContext configured

Everything looked fine to me and the exception didn’t clearly says what is missing.

After going through the SessionFactoryImpl, I found that we also need to configure the current session context class to get the current session.

This is done in method buildCurrentSessionContext() and it looks for property hibernate.current_session_context_class.

From the method body, it became clear that the value of this property should be:

1. jta for getting JTASessionContext
2. managed for ManagedSessionContext
3. thread for ThreadLocalSessionContext

The method also works if we provide above class name. So when I added this property in the hibernate configuration file, program started working fine.

Hibernate CurrentSessionContext class configuration example

Sample ways to define current_session_context_class property are:

Copy
<property name="hibernate.current_session_context_class">thread</property>

Use below configuration if your hibernate configuration file is having xml format.

Copy
<property name="hibernate.current_session_context_class">
org.hibernate.context.internal.ThreadLocalSessionContext
</property>

Thats’s all for fixing org.hibernate.HibernateException: No CurrentSessionContext configured. I hope it will save you some time.

About Pankaj

If you have come this far, it means that you liked what you are reading. Why not reach little more and connect with me directly on Google Plus, Facebook or Twitter. I would love to hear your thoughts and opinions on my articles directly.

Recently I started creating video tutorials too, so do check out my videos on Youtube.