1.Enable archiving Mode
(1)Shutdown the database.
?View Code SQL SHUTDOWN IMMEDIATE;
(2)Start the database in Mount state.
?View Code SQL STARTUP MOUNT;
(3)Set the database in Archivelog mode by using the ALTER DATABASE command.
?View Code SQL ALTER DATABASE ARCHIVELOG;
(4)Open the database.
?View Code SQL ALTER DATABASE OPEN;
(5)Take a full backup of the database.

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