Transaction marked as rollback only: How do I find the cause

Question

I am having issues with committing a transaction within my @Transactional method:

methodA() {
    methodB()
}

@Transactional
methodB() {
    ...
    em.pers         


        

Answer 1

To quickly fetch the causing exception without the need to re-code or rebuild, set a breakpoint on

org.hibernate.ejb.TransactionImpl.setRollbackOnly() // Hibernate < 4.3, or
org.hibernate.jpa.internal.TransactionImpl() // as of Hibernate 4.3

and go up in the stack, usually to some Interceptor. There you can read the causing exception from some catch block.