1.查看每周生成的歸檔量

select logtime,  
       count(*),  
       round(sum(blocks * block_size) / 1024 / 1024) mbsize  
from (select trunc(first_time, ‘dd‘) as logtime, a.BLOCKS, a.BLOCK_SIZE  
          from v$archived_log a  
         where a.DEST_ID = 1  
           and a.FIRST_TIME > trunc(sysdate - 7))  
group by logtime  
order by logtime desc;

LOGTIME     COUNT(*)     MBSIZE
--------- ---------- ----------
05-NOV-18     225      11465
04-NOV-18     516      26211
03-NOV-18     510      25946
02-NOV-18     508      25606
01-NOV-18     497      25330
31-OCT-18     495      25095
30-OCT-18     488      24781
29-OCT-18     483      24568
 

Oracle常用腳本