set lines 150 pages 9999
col object_name for a30
alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
select owner,object_name,created,last_ddl_time from dba_objects where owner='xxx' and object_name ='xxxx';
created字段是对象创建的时间,last_ddl_time是表最后进行修改表结构的时间。