EJB: Using EntityManager in PostConstruct method

Question

After constructing the bean, I want to retrieve data from the database, using the EntityManager. It is not possible in the constructor, because the EntityManager is injected aft

Answer 1

Based on your requirement please try the following

• Remove @Stateful [CAN'T use both at a time]

• @Startup will initialize singleton bean during APPLICATION INIT [Please note the application was NOT fully initialized]. This might caused some issue in loading EntityManager and i assume the EntityManager bridge was not completely initialized. Try to call the init after complete application startup [i.e.,] Remove @Startup