create table dropme_t(id number, somedata varchar2(300)
                     ) partition by range (id) interval (1000)
                     (partition p1 values less than (0) segment creation deferred)
;
Table created

create index dropme_t$id on dropme_t(id) local
;
Index created

alter table dropme_t add constraint dropme_t$pk primary key (id) using index dropme_t$id
;
Table altered

create table dropme_child_t( id number, id_parent number not null, somedata varchar2(300)
                           , constraint dropme_t$fk foreign key (id_parent) references dropme_t(id)
                           ) partition by reference(dropme_t$fk)
;
Table created

create index dropme_child_t$id on dropme_child_t(id_parent, id) local
;
Index created

alter table dropme_child_t add constraint dropme_child_t$pk primary key (id_parent, id) using index dropme_child_t$id
;
Table altered

create table dropme_child2_t( id number not null, id_parent number not null, somedata varchar2(300)
                            , constraint dropme_child_t$fk foreign key (id_parent, id) references dropme_child_t(id_parent,id)
                            ) partition by reference(dropme_child_t$fk)
;
Table created