删除数据库归档日志

rman target/@orcl

crosscheck archivelog all; 
delete expired archivelog all; 

交互提示
delete archivelog all completed before 'sysdate-7';
不交互直接删除
DELETE noprompt ARCHIVELOG ALL COMPLETED BEFORE 'SYSDATE-11';

监控归档日志生成量
SELECT TRUNC(FIRST_TIME) "日期",
TRUNC(SUM(BLOCKS * BLOCK_SIZE) / 1024 / 1024 / 1024, 2) "大小（GB/DAY）"
FROM V$ARCHIVED_LOG
GROUP BY TRUNC(FIRST_TIME)
ORDER BY 1 DESC;