Top "Persistence-unit" questions

Persistence Unit is a logical grouping of user defined persistable classes (entity classes, embeddable classes and mapped superclasses) with related settings.

EJB3 - using 2 persistence units within a transaction (Exception: Local transaction already has 1 non-XA Resource)

I am trying to use 2 persistence units within the same transaction in a Java EE application deployed on Glassfish. The 2 …

transactions glassfish ejb-3.0 multiple-databases persistence-unit