(Choose four.)

Identify four significant changes when a backup of Exadata compute nodes must be performed. (Choose four.)

A.
addition of an Exadata storage expansion rack

B.
storage server rebalancing

C.
installation or reconfiguration of significant non-Oracle software

D.
application of Oracle patches

E.
before shutdown to preserve storage indexes

F.
application of operating system patches

G.
reconfiguration of significant operating system parameters