crosscheck archivelog all;  

delete noprompt expired archivelog all;  

delete noprompt archivelog until time 'sysdate-1'; 

 

 

 

删除log sequence为16及16之前的所有归档日志

delete archivelog until sequence 16; 

 

 

删除系统时间7天以前的归档日志，不会删除闪回区有效的归档日志                   

delete archivelog all completed before 'sysdate-7'; 

 

    

删除系统时间1天以内到现在的归档日志

delete archivelog from time 'sysdate-3';    

 

 

清除所有的归档日志           

delete noprompt archivelog all completed before 'sysdate';    

 

 

清除所有的归档日志  

delete noprompt archivelog all;