SchemaUpdate : java.sql.SQLException: You cannot commit during a managed transaction! ------------------------------------------------------------------------------------- Key: HHH-1316 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1316 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.1 Environment: Hibernate 3.1 , Oracle 9i Reporter: Kumar Matcha SchemaUpdate gets a connection from the ConnectionProviderFactory, which returns a connection based on the hibernate properties. When we use the following properties hibernate.connection.datasource = java:/hibernateDS hibernate.transaction.factory_class = org.hibernate.transaction.JTATransactionFactory hibernate.transaction.manager_lookup_class = org.hibernate.transaction.JBossTransactionManagerLookup hibernate.current_session_context_class = jta SchemaUpdate fails because you cannot call a commit on a managed transaction. Either Schema update shouldnt be allowed during a managed transaction, by throwing some exception, or commit should be disabled when using a managed transaction.