1、.Which two are true about the Archive (ARCn) processes?
? A) They automatically delete obsolete archive logs to make
space for new archive logs.
? B) They are used during Instance recovery.
? C) They archive redo directly from the redo log buffer.
? D) They are enabled only when the database Is In ARCHTVELOC
mode.
? E) They create archivelogs after every log switch.
? Answer:DE【OCP|052】OCP最新题库解析系列-1
原文：http://blog.51cto.com/13854012/2136536
