多项选择题
A. The KEEP option overrides the configured retention policy
B. The KEEP option is an attribute of an individual backup piece
C. The backup contains only data files and archived redo log files
D. The backup contains data files, the server parameter file and the control file even if the control file auto backup is disabled
多项选择题 You need to perform a block media recovery on the tools01.dbf data file in the SALES database by using Recovery Manager (RMAN). Which two are the prerequisites to perform this operation? （）(Choose two)
单项选择题 Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement： ALTER TABLESPACE data1 BEGIN BACKUP； While you are performing the backup， an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true？（）
多项选择题 Examine the following command that is used to duplicate a database on the same host: RMAN> RUN { ALLOCATE AUXILIARY CHANNEL, aux 1 DEVICE TYPE DISK; DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY; \ } Which two statements describe the effect after the database is duplicated successfully? （）(Choose two)