在日常数据库维护过程中，我们需要及时检查数据库中存在的失效对象信息，对于存在异常的对象需要重新编译，各种对象类型可参见如下编译方法：

检查生成无效对象的名称，并存放object.lst文件中

pool objects.lst                                                                 
set pagesize500                                                                  
set linesize 100                                                                 
                                                                                 
select substr(comp_name,1,40) comp_name, status, substr(version,1,10) version    
from dba_registry                                                                
order by comp_name;                                                              
                                                                                 
select substr(object_name,1,40) object_name,substr(owner,1,15) owner,object_type 
from dba_objects                                                                 
where status='INVALID' order by owner,object_type;                               
                                                                                 
select owner,object_type,count(*)                                                
from dba_objects                                                                 
where status='INVALID'                                                           
group by owner,object_type order by owner,object_type ;                                                                                                        

spool off        

生成后关闭sqlplus的spool记录

各个对象的编译方法分别如下：                                                                                                                                               

alter package . compile;                              
alter package . compile body;                         
alter view . compile;                                    
alter trigger