Oracle 11G OCP 1Z0-053 100

（100）Examine the following command that is used to duplicate a database on the same host:

RMAN>RUN {   ALLOCATE AUXILIARY CHANNEL aux1 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

答案：（A、B）

解析：

DUPLICATE...SKIP READONLY

在複製資料庫的過程中排除當前只讀表空間的資料檔案. 預設RMAN複製當前只讀的表空間.

如果一個表空間當前為read/write,但你使用了untilClause來複制資料庫到一個SCN（此時該表空間為只讀),則RMAN在複製資料庫中不包含該表空間.

之前只讀的表空間被認為是離線的表空間,因此不包含在複製中.

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