Which four are true about the Archive (ARCn) processes?
A)They might be used during instance recovery.
B)They can create archivelogs.
C)They are always used during instance recovery.
D)They archive redo from an active redo log.
E)They are always used during media recovery.
F)They can ship redo automatically to standby databases
G)They might be used during media recovery.
Answer: BDFG
Zhao:
AC wrong, ARCn role is to copy the log switch occurs when the redo log file after switching to archive log files, and instance recovery does not matter.
E fault, not always. Only when the data file is damaged, online log file corruption from happening, was restored with the media.
F translated: they can be automatically sent to the standby redo.