Flashback log purge

Question

Hi
I`ve set db_recovery_file_dest_size to 20m and flashback retention target to 60mins.
As far as I know flashback logs are automatically deleted when the fra is filled up.
I notice that there are 4 flashback logs and they are never deleted in the last two days.
What is the reason for that ?
log_1.287.760141739
log_2.281.759973635
log_2.285.760141745
log_3.298.760145161

Answer 1

It only possible it will reuse it.
Most of the time it will create a new log from my experience.
It all depends on your settings.
I watch v$flash_recovery_area_usage fairly close on my systems and the flashback logs are a fairly small piece of my FRA.
Archive and RMAN backups use up most of the space. For the most part I let Oracle just handle the flashback logs.
Best Regards
mseberg
Query I like for this :
SELECT
  ROUND((A.SPACE_LIMIT / 1024 / 1024 / 1024), 2) AS FLASH_IN_GB,
  ROUND((A.SPACE_USED / 1024 / 1024 / 1024), 2) AS FLASH_USED_IN_GB,
  ROUND((A.SPACE_RECLAIMABLE / 1024 / 1024 / 1024), 2) AS FLASH_RECLAIMABLE_GB,
  SUM(B.PERCENT_SPACE_USED)  AS PERCENT_OF_SPACE_USED
FROM
  V$RECOVERY_FILE_DEST A,
  V$FLASH_RECOVERY_AREA_USAGE B
GROUP BY
  SPACE_LIMIT,
  SPACE_USED ,
  SPACE_RECLAIMABLE ;And
column FILE_TYPE format a20
select * from v$flash_recovery_area_usage;Edited by: mseberg on Aug 24, 2011 9:01 PM