HibernateException: cannot simultaneously fetch multiple bags
9:29 AM, Mon, Aug 20 2007
You're doing everything the EJB 3 Way, meaning you are using persistent objects with collections. Everything is fine until you deploy and get today's Exception of the Day:
Caused by: org.hibernate.HibernateException: cannot simultaneously fetch multiple bags at org.hibernate.loader.BasicLoader.postInstantiate(BasicLoader.java:66) at org.hibernate.loader.entity.EntityLoader.
(EntityLoader.java:75) at org.hibernate.loader.entity.EntityLoader. (EntityLoader.java:43)
This is due to a bug. The solution: You can have at most one
@OneToMany(fetch=FetchType.EAGER) relationship in your entity. Remove the
fetch=FetchType.EAGER attributes on all but one of the
@OneToMany annotations in the entity.