多选题Which are the prerequisites for performing flashback transactions on your database?()AUndo retention guarantee for the database must be configured.BSupplemental log must be enabled for the primary key.CSupplemental log must be enabled.DExecute permission on the DBMS_FLASHBACK package must be granted to the user.
多选题
Which are the prerequisites for performing flashback transactions on your database?()
A
Undo retention guarantee for the database must be configured.
B
Supplemental log must be enabled for the primary key.
C
Supplemental log must be enabled.
D
Execute permission on the DBMS_FLASHBACK package must be granted to the user.
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