Backup and Recovery: Configuration
Objectives
After completing this lesson, you should be able to:
• Configure the fast recovery area
• Multiplex the control file
• Multiplex redo log files
• Configure ARCHIVELOG mode
目标
完成本课程后,您应该能够:
•配置快速恢复区域
•多路传输控制文件
•多路重做日志文件
•配置ARCHIVELOG模式
Configuring for Recoverability
Configure your database for maximum recoverability by:
• Scheduling regular backups
• Multiplexing control files
• Multiplexing redo log groups
• Retaining archived copies of redo logs
配置可恢复性
通过以下方式配置数据库以获得最大的可恢复性:
•安排定期备份
•多路传输控制文件
•多路复用重做日志组
•保留重做日志的存档副本
Configuring the Fast Recovery Area
• Fast recovery area:
– Strongly recommended for simplified backup storage
management
– Storage space (separate from working database files)
– Location specified by the DB_RECOVERY_FILE_DEST
parameter
– Size specified by the DB_RECOVERY_FILE_DEST_SIZE
parameter
– Large enough for backups, archived logs, flashback logs,
multiplexed control files, and multiplexed redo logs
– Automatically managed according to your retention policy
• Configuration of the fast recovery area includes specifying the location, size, and retention policy.
配置快速恢复区域
•快速恢复区:
–强烈建议简化备份存储
管理
–存储空间(与工作数据库文件分开)
–由DB_RECOVERY_文件指定的位置
参数
–由DB_RECOVERY_FILE_DEST_Size指定的大小
参数
–足够大,可用于备份、存档日志、闪回日志,
多路传输控制文件和多路传输重做日志
–根据您的保留策略自动管理
•快速恢复区域的配置包括指定
位置、大小和保留策略。