With the flashback database we can use the restore point to return the database to a time in the past.
For more detailed information about the Flasback Database you can read the article “What is FLASBACK DATABASE And How To FLASHBACK”
With the command below, create a restore point while the database is in mount mode.
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						create restore point restore_point_name [GUARANTEE FLASHBACK DATABASE];  | 
					
You can list existing restore points with the help of the following script.
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						SELECT NAME, SCN, TIME, DATABASE_INCARNATION#, GUARANTEE_FLASHBACK_DATABASE,STORAGE_SIZE  FROM V$RESTORE_POINT;  | 
					
You can also delete an existing restore point using the following script.
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						DROP RESTORE POINT restore_point_name;  |