oracle system one sql run too long time

select t., o., m.comments
from sys.all_tables t,
sys.all_tab_comments m,
sys.all_objects o
where t.owner = :object_owner
and t.table_name = :object_name
and m.owner (+) = :object_owner
and m.table_name (+) = :object_name
and o.owner (+) = :object_owner
and o.object_name (+) = :object_name
and :object_type is not null
and :sub_object is null