Total combined size of Archived logs

Question

DB version : 11.2
Platform : AIX
How can I determine the total size of archive logs for a particular DB?
Googling and OTN search didn't provide much details
Didn't get the solution from the following thread either as it digressed from the subject
Re: archive log size
The redo log size for our DB is 100 mb.
SQL> select count(*) from v$archived_log where status = 'A' and name is not null;
  COUNT(*)
        22
So, I can multiply 22*100 = 2200 mb . But there has been some manual switches, the size of those files will be less. This is why I am looking for an accurate way to determine the total size of Archive logs.

Answer 1

Hello;
V$ARCHIVED_LOG contains BLOCKS ( Size of the archived log (in blocks) ) and BLOCK_SIZE ( which is the same as the logical block size of the online log from which the archived log was copied )
So with a little help in the query you should be able to get it.
Archivelog size each day
select
  trunc(COMPLETION_TIME) TIME,
  SUM(BLOCKS * BLOCK_SIZE)/1024/1024 SIZE_MB
from
  V$ARCHIVED_LOG
group by
trunc (COMPLETION_TIME) order by 1;Since COMPLETION_TIME is a DATE you can add another SUM to the query to get the exact total you want for the exact date range you want.
Archivelog size each hour
alter session set nls_date_format = 'YYYY-MM-DD HH24';
select
  trunc(COMPLETION_TIME,'HH24') TIME,
   SUM(BLOCKS * BLOCK_SIZE)/1024/1024 SIZE_MB
from
  V$ARCHIVED_LOG
group by
  trunc (COMPLETION_TIME,'HH24') order by 1;Another example
SELECT   To_char(completion_time,'YYYYMMDD')    run_date,
         Round(Sum(blocks * block_size + block_size) / 1024 / 1024 / 1024) redo_blocks
FROM     v$archived_log
GROUP BY To_char(completion_time,'YYYYMMDD')
ORDER BY 2
/Best Regards
mseberg
Edited by: mseberg on Feb 23, 2012 2:30 AM