rac数据库的备份和恢复,与单实例Oracle数据库的备份和恢复没有根本的不同,但区别还是有的,如果大家理解了Redo Threads和Streams概念,也就没什么了,下面这段文字清晰了解释了两者的概念和rac及单实例间的不同: Redo information generated by an instance is called a thread of redo. All log files for that instance belong to this thread. An online…