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FAQ Category:

Sometimes it's useful to have an AFTER_SUCCESS transactional observer that e.g. updates a list when an entity is persisted. However, if you do something like

public void userAdded(@Observes(during=TransactionPhase.AFTER_SUCCESS) @Added User user)
{
  // access a persistence context and refresh the user list
}

in your SFSB, you will be hit by a transaction is not active exception even if you would expect the default REQUIRED transaction attribute to start a new one for you. This is not actually a CDI issue, more of how JTA transaction synchronizations work. You need to add a

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)

to the bean or method to ensure you have an active transaction.