How can I see all references to primary key

Question

How can I make a query for my primary key to see the detail foreign keys and see which key is not available?

Answer 1

select a.table_name, a.constraint_name, b.table_name as Ref_Table, b.constraint_name as Ref_Constraint
From ALL_CONSTRAINTS a, ALL_CONSTRAINTS b
where a.r_constraint_name = b.constraint_name
and a.constraint_type = 'R'
and b.table_name = 'TABLE_NAME';
OR, more exactly:
select a.table_name, a.constraint_name, b.table_name as Ref_Table, b.constraint_name as Ref_Constraint
From ALL_CONSTRAINTS a, ALL_CONSTRAINTS b
where a.r_constraint_name = b.constraint_name
and a.constraint_type = 'R'
and b.constraint_type = 'P'
and b.table_name = 'TABLE_NAME';
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