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';

转自< http://blog.itpub.net/28408358/viewspace-764437/  >