随堂笔记：Oracle中查看无效的对象、约束、触发器和索引

1、检查无效的数据库对象：

SELECT owner, object_name, object_type,status 

FROM dba_objects 

WHERE status = 'INVALID'; 

2、检查不起作用的约束：

SELECT owner, constraint_name, table_name, constraint_type, status

FROM dba_constraints  WHERE status = 'DISABLED';

3、检查无效的触发器：

SELECT owner, trigger_name, table_name, status

FROM dba_triggers  WHERE status = 'DISABLED'; 

4、检查失效的索引：

select index_name,table_name,tablespace_name,status

  From dba_indexes Where status<>'VALID';