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Oracle 19c : Clear flashback logs periodically​ & Automatically

 Previous versions of Oracle database needs to manually manage the flashback area i.e flashback_retention_target to adjust according to growth of flashback logs​ Or manually backup the logs/backupsets to tape or to delete them​

But from Oracle 19c onwards, the management of space in the fast recovery area is simplified. Oracle Database monitors flashback logs in the fast recovery area and automatically deletes flashback logs that are beyond the retention period. When the retention target is reduced, flashback logs that are beyond the retention period are deleted immediately. ​

In scenarios where a sudden workload spike causes a large number of flashback logs to be created, the workload is monitored for a few days before deleting flashback logs that are beyond the retention period. This avoids the overhead of recreating the flashback logs, if another peak workload occurs soon after.​

I will have to check any initialization parameter to control this behavior, but its automatically set if compatible is 19.0.0 or higher

September 17th, 2019 | Tags: , , , | Category: 19c Database

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