Oracle查看被覆盖的存储过程

以dba的身份登录
select * 
from dba_source as of timestamp TO_TIMESTAMP('2014-05-04 14:33:00', 'YYYY-MM-DD HH24:MI:SS') 
where TYPE = 'PROCEDURE' 
And owner = 'TEST' 
And Name = 'GG_TEST';