142.In which situations will the ASM metadata backup help you recover the ASM disk in a disk group? (Choose all that apply.)
A.when one or more file directory paths are accidentally deleted from an ASM disk group
B.when one of the disks in a disk group is accidentaly unplugged
C.when the data file on an ASM disk group gets corrupted
D.when one or more disks in an ASM disk group are lost
正确答案是AD