Which two are true about reclaiming space used by Flashback logs in Oracle Database 19c and later releases? (Choose two.)

Question

Options

• ASpace is always reclaimed automatically when the retention period for Flashback logs is lowered.
• BSpace might be reclaimed proactively before space pressure occurs.
• CSpace might be reclaimed automatically when the retention period for Flashback logs is lowered.
• DSpace is only reclaimed when there is space pressure in the Fast Recovery Area. (FRA)
• ESpace is always reclaimed proactively before space pressure occurs.

• A
  78% (52)
• B
  3% (2)
• C
  13% (9)
• D
  6% (4)

Explanation

The COMPATIBLE initialization parameter must be set to 19.0.0 or higher. 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. https://docs.oracle.com/en/database/oracle/oracle-database/19/newft/new-features.html#GUID- 4DE9FA4A-BA27-434A-A68E-0B58D8FD686B

No community discussion yet for this question.