Backup and Recovery Concepts 备份和恢复的概念
you should be able to: Identify the types of failure that can occur in an Oracle database Describe ways to tune instance recovery Identify the importance of checkpoints, redo log files, and archive log files Configure the fast recovery area Configure ARCHIVELOG mode
The database administrator’s duties are to: Protect the database from failure wherever possible Increase the mean time between failures (MTBF) Protect critical components by redundancy Decrease the mean time to recover (MTTR) Minimize the loss of data
考：
考：
实例恢复调优：
archive log list; 查看是否开启归档；
建议生产环境用FRA.
