The sample script above take from the link you gave me does not work :(
select 'alter table 'a.owner'.'a.table_name' disable constraint 'a.constraint_name';' from all_constraints a, all_constraints b where a.constraint_type = 'R' and a.r_constraint_name = b.constraint_name and a.r_owner = b.owner and b.table_name = 'APPLICATION';
Then you can disable the constraints and latter truncate the table.
select owner,constraint_name,constraint_type,table_name,r_owner,r_constraint_name from all_constraints where constraint_type='R' and r_constraint_name in (select constraint_name from all_constraints where constraint_type in ('P','U') and table_name='TABLE_NAME');