The qarchive_generated script will sum up the archive log generated on a daily basis and show the count and size per day.

SQL

select to_char(ct,’Day DD-Mon-RR’) “Date”
,gb,cnt
from (
select trunc(completion_time) as ct ,round((sum(blocks*block_size)/1024/1024/1024),2) as gb,count(*) as cnt
from v$archived_log
group by trunc(COMPLETION_TIME)
order by trunc(COMPLETION_TIME)
)
/

Output