题目内容

YouworkasadatabaseadministratorforCertkiller.com.YouareusingRecoveryManager(RMAN)toperformbackupsinyourdatabases.WhichfourbackupoperationscanbeperformedusingRMAN?()

Abackupofthetargetdatabasewhenitismounted
B. Abackupofonlineredologfileswhenthedatabaseisopen
C. Abackupofonlyuseddatablocksinthefilebeingbeingbackupup
D. Abackupofonline,read/writedatafileswhenthedatabaseisopen
E. Abackupofonlythosedatablocksthathavechangedsinceapreviousbackup
F. Abackupofonline,read/writedatafileswhenthedatabaseisintheNOMOUNTstate.

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