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.
Explanation:
Reference from the Oracle document release v11.1 at here:
Repairs a range of physical blocks on a disk. The remap command only repairs blocks that
have read disk I/O errors. It does not repair blocks that contain corrupted contents, whether
or not those blocks can be read. The command assumes a physical block size of 512 bytes
and supports all allocation unit sizes (1 to 64 MB).
Reference from the Oracle document release v11.2 at here:
The remap command marks a range of blocks as unusable on the disk and relocates any
data allocated in that range.