crosscheck archivelog all;
delete noprompt expired archivelog all;
delete noprompt archivelog until time 'sysdate-1';
刪除log sequence為16及16之前的所有歸檔日志
delete archivelog until sequence 16;
刪除系統時間7天以前的歸檔日志,不會刪除閃回區有效的歸檔日志
delete archivelog all completed before 'sysdate-7';
刪除系統時間1天以內到現在的歸檔日志
delete archivelog from time 'sysdate-3';
清除所有的歸檔日志
delete noprompt archivelog all completed before 'sysdate';
清除所有的歸檔日志
delete noprompt archivelog all;