Which two are true about flashback features in Oracle Database 19c and
Later releases? (Choose two.)
A.Flashback logs are automatically purged when正确答案AC
DB_FLASHBACK_RETENTION_TARGET is set lower than the time they have
Already been retained. B.Flashback logs are monitored and proactively deleted when beyond the
Retention period defined in DB_FLASHBACK_RETENTION_TARGET only after
There is space pressure. C.Flashback logs are monitored and proactively deleted when beyond the
Retention period defined in DB_FLASHBACK_RETENTION_TARGET before there is
Space pressure. D.Flashback logs are monitored for being older than the retention period
Defined in DB_FLASHBACK_RETENTION_TARGET and can be deleted by an
Administrator written event trigger. E.Flashback logs are automatically purged whenever the value of
DB_FLASHBACK_RETENTION_TARGET is changed.
