多项选择题
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.
多项选择题 Examine the following RMAN command: Which two statements are true regarding the backup taken by using the above RMAN command?()
单项选择题 You want to perform the following operations for the DATA ASM disk group: Which command accomplishes these tasks?()
多项选择题 Which two statements are correct about database transportation? ()