A) They can only be taken when a RECOVERY CATALOG is used.
B) They can only be taken if the database Is in ARCHIVELOG mode.
C) They can only be taken If shutdown NORMAL, TRANSACTIONAL, or IMMEDIATE shutdown has been performed and the backup is taken before the database is reopened.
D) They can only be taken by using RMAN commands.
E) They can only be taken by using RMAN when the database is in MOUNT state.
Answer:CE
【OCP|052】OCP题库更新，052最新考题及答案整理-第10题
原文：http://blog.51cto.com/13854012/2140735