Hibernate does suboptimally queries

Question

I use hibernate 4.3.6, spring data jpa 1.9

I have 2 entity: DocumentOrder and OrderChain. OrderChain have ManyToOne DocumentOrders; DocumentOrder doesnt have link.

public class OrderChain {
   @ManyToOne(fetch = FetchType.EAGER)
   private DocumentOrder documentOrder;
}

When i do query "SELECT oc FROM OrderChain oc WHERE ..." i have many requests to database(I look in console).

I find similar topics:

preventing N+1 selects in JPA

FetchMode join makes no difference for ManyToMany relations in spring JPA repositories

JPA eager fetch does not join

but i dont know how solve it without adding join fetch in my Query.

edit: I try add @Fetch(FetchMode.JOIN) to documentOrder, but it doesnt make any effect.

Thanks