[单选]
Examine the following RMAN script：
RMAN> run { debug on；
allocate channel c1 type disk； backup datafile 5； }
Which statement describes the purpose of the script？（）

A . The data file is checked for physical corruption and backed up if found clean.
B . The backup of data file 5 is performed and the interactive messages during the backup are suppressed.
C . The existing backup for the data file is checked and the backup is performed if there are changes in the data file after the last backup.
D . The backup of data file 5 is performed and all SQL statements that are executed during RMAN compilation and their results are displayed

按照《消费者权益保护法》的规定，保护消费者的合法权益是（）商家的责任。政府的责任。中国消费者协会的责任。全社会共同的责任。下列人员中，属于报复陷害犯罪对象的有（）。举报人。控告人。申诉人。批评人。 Where are timekeeping services configured？（） /etc/services。 /etc/rc.tcpip。 /etc/ntpd.conf。 /etc/inetd.conf。某评估机构采用统计分析法对一企业的固定资产进行评估。其中砖混结构建筑物10栋，账面原值500万元；设备100台，账面原值1000万元。评估中对3栋具有代表性的建筑物进行估算，其重置成本为180万元，而该3栋建筑物的账面原值为165万元；同时选择10台具有代表性的设备进行了评估，其重置成本为150万元，而该10台设备的账面原值为120万元；则该企业被评估建筑物及设备的重置成本最接近于（）。 1736.85万元。 1795.45万元。 1818.36万元。 2100万元。 You are in the process of creating a virtual private catalog in your Oracle Database 11g database. The PROD1, PROD2, and PROD3 Oracle Database 10g databases are registered in the base recovery catalog. The database user who owns the base recovery catalog is CATOWNER. CATOWNER executes the following command to grant privileges to a new user VPC1 using Oracle Database 11g RMAN executables: What is the outcome of the above commands?（） They execute and create a virtual catalog for pre-Oracle 11g clients.。 They produce an error because PROD1 and PROD2 databases belong to the older version.。 They produce an error because you need to connect as CATOWNER to execute this packaged procedure.。 They produce an error because you need to connect to the target database to execute this packaged procedure.。

Examine the following RMAN script：
RMAN> run { debug on；
allocate channel c1 type disk； backup datafile 5； }
Which statement describes the purpose of the script？（）

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[单选] Examine the following RMAN script： RMAN> run { debug on； allocate channel c1 type disk； backup datafile 5； } Which statement describes the purpose of the script？（）

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[单选]
Examine the following RMAN script：
RMAN> run { debug on；
allocate channel c1 type disk； backup datafile 5； }
Which statement describes the purpose of the script？（）