After which two operations you should take the backup of control file ?

Your database is in NOARCHIVELOG mode. After which two operations you should take the backup of control file ? (Choose two.)

Your database is in NOARCHIVELOG mode. After which two operations you should take the backup of control file ? (Choose two.)

A.
dropping a table from the database

B.
adding a new user to the database

C.
dropping a data file from a tablespace

D.
dropping a user from the database

E.
adding a new tablespace to the database



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