<{p}>1、Which two are true about reclaiming space used by Flashback logs in Oracle Database 19c and later releases?<{br/}><{/p}>

【多选题】
A <{p}>Space is only reclaimed when there is space pressure in the Fast Recovery Area(FRA)<{br/}><{/p}>
B <{p}>Space is always reclaimed automatically when the retention period for Flashback logs is lowered<{br/}><{/p}>
C <{p}>Space might be reclaimed proactively before space pressure occurs<{br/}><{/p}>
D <{p}>Space is always reclaimed proactively before space pressure occurs<{br/}><{/p}>
E <{p}>Space might be reclaimed automatically when the retention period for Flashback logs is lowered<{br/}><{/p}>

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