Query all child nodes of a parent node:
SELECT * FROM menu m START WITH m.ID_ = '402882836068695f0160688eebf70006' CONNECT BY m.parent_id = PRIOR m.id_;
Query all parent nodes of child nodes:
SELECT * FROM menu m START WITH m.ID_ = '4028828360f8d01f0160f8d878d60009' CONNECT BY PRIOR m.parent_id = m.id_;