Hibernate failure due to missing active transaction on @Transactional annotated method

Solution Verified - Updated -

Issue

We have created a custom login module for our portal solution deployed on JPP 6. During authentication a method annotated with @Transactional throws this exception:

[org.custom.LoginModule] getNamedQuery is not valid without active transaction: org.hibernate.HibernateException: getNamedQuery is not valid without active transaction.

Why is there no valid transaction while the called method is annotated to require transactions?

Environment

  • Red Hat JBoss Portal
    • 6.1.1

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