1、檢查無效的數據庫對象
select owner,object_name,object_type,status
from dba_objects
where status = 'INVALID';
2、檢查不起作用的約束
select owner,constraint_name,table_name,constraint_type,status
from dba_constraints
where status = 'DISABLED';
3、檢查無效的觸發器
select owner,trigger_name,table_name,status
from dba_triggers
where status = 'DISABLED';
4、檢查失效的索引
select index_name,table_name,tablespace_name,status
from dba_indexes
where status <>'VALID';