Question

I have two entities // All details has been removed

@Entity
@Table(name = "A_TABLE_NAME")
public class AEntity extends ... {
 
...
@ManyToOne(fetch = FetchType.LAZY)
  private BEntity b;
...
}

@Entity
@Table(name = "B_TABLE_NAME")
public class BEntity extends ... { 
...
}

When I start tomcat server in table creation\alter time(I use code-first conception) I have error

ERROR: Unsuccessful: create table A_TABLE_NAME_B_TABLE_NAME (…)

ERROR: ORA-00972: identifier is too long

As I know ManyToOne relation can be stored as column in A_TABLE_NAME table. Why Hibernate trying to create table to store this relation(like this is ManyToMany relation) ?

Answer 1

@ManyToOne doesn’t generate an extra table unless you specify a @JoinTable annotation, so I assume that the problem is somewhere on the details you ommited