Oracle 11G OCP 1Z0-053 36

（36）Which two statements are true regarding the functionality of the remap command in ASMCMD?(Choose two.)

A. It repairs blocks that have read disk I/O errors.

B. It checks whether the alias metadata directory and the file directory are linked correctly.

C. It repairs blocks by always reading them from the mirror copy and writing them to the original location.

D. It reads the blocks from a good copy of an ASM mirror and rewrites them to an alternate location on disk if the blocks on the original location cannot be read properly.

答案：（A、D）

解析：

參考《Automatic Storage Management Administrator's Guide》  remap命令

在磁碟上標誌一定範圍的塊不可用並relocates在這個範圍內分佈的塊

remap命令只是relocate塊.它不會correct或repaire包含損壞內容的塊.

這個命令使用的物理塊大小由磁碟組屬性SECTOR_SIZE決定

A選項感覺有些勉強

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