OCP-1Z0-053-V12.02-100题

100.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)
A. The data files of the read-only tablespaces in the target database are not duplicated
B. The read-only tablespaces in the target database are still defined in new the database
C. The read-only tablespaces in the target database are changed to online after duplication
D. The data files of the read-only tablespaces in the target database get duplicated
E. The read-only tablespaces in the target database are not defined in the new database
Answer: AB
答案解析：
参考：/article/1628952.html
官方参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10643/rcmsynta020.htm#RCMRF90163

SKIP READONLY：用于排除只读表空间数据文件。

SKIP READONLY

Excludes data files in current read-only tablespaces from the duplicate database. By default RMAN duplicates current read-only tablespaces. If a tablespace is currently read/write, but you use untilclause to duplicate the database to an SCN at which the tablespace was read-only, then RMAN does not include the tablespace in the duplicate database. Tablespaces that were read-only previously are considered offline tablespaces and so are not included in the duplication. Note: The read-only tablespaces must be self-contained for the DUPLICATE command to succeed with this option.