What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）<br>A:An upper limit on how far you can flash back the database, depending on the information in the redo logs<br>B:An upper limit on how far you can flash back the database, depending on the information in the undo tablespace<br>C:The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough space<br>D:The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space

What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）
A:An upper limit on how far you can flash back the database, depending on the information in the redo logs
B:An upper limit on how far you can flash back the database, depending on the information in the undo tablespace
C:The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough space
D:The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space

出自：Oracle认证

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