官方文档 恢复备份指南三 Recovery Manager Architecture
- About the RMAN Environment 关于RMAN环境
- RMAN Command-Line Client RMAN命令行
- RMAN Channels RMAN通道
- RMAN Repository RMAN资源库
- Media Management 介质管理
- Fast Recovery Area 快速恢复区
- RMAN in a Data Guard Environment DATA GUARD 环境中的RMAN
1.About the RMAN Environment 关于RMAN环境
Component | Description |
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The client application that manages backup and recovery operations for a target database. The RMAN client can use Oracle Net to connect to a target database, so it can be located on any host that is connected to the target host through Oracle Net. RMAN工具 |
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A database containing the control files, datafiles, and optional archived redo logs that RMAN backs up or restores. RMAN uses the target database control file to gather metadata about the target database and to store information about its own operations. The work of backup and recovery is performed by server sessions running on the target database. RMAN用来还原和恢复的数据库.RMAN用目标数据库的控制文件存储RMAN元数据. 备份和恢复的工具由目标数据库的server sessions来做 |
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A database containing a recovery catalog, which contains metadata that RMAN uses to perform backup and recovery. You can create one recovery catalog that contains the RMAN metadata for multiple target databases. Unless you are using RMAN with a physical standby database, a recovery catalog is optional when using RMAN because RMAN stores its metadata in the control file of each target database. 包含有恢复目录的数据库称为recovery catalog database.一个catalog可以包含多个数据库的RMAN元数据.在不使用物理备库的情况下,catalog是可选的. |
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The user within the recovery catalog database that owns the metadata tables maintained by RMAN. RMAN periodically propagates metadata from the target database control file into the recovery catalog. 恢复目录的所有者.RMAN定期的将元数据从目标数据库写到catalog. |
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A copy of the primary database that is updated with archived redo logs generated by the primary database. A physical standby database has the same RMAN can create, back up, or recover a standby database. Backups that you make at a standby database are usable at primary database or another standby database for same production database. The recovery catalog is required when you use RMAN in the Data Guard environment. Note: A logical standby database is treated as a separate database by RMAN because it has a different DBID from its primary database. 物理备库:主库的复制,拥有完全相同的结构\DBID\DB_NAME,但是DB_UNIQUE_NMAE不同,使用日志来同步.RMAN可创建、备份、恢复物理备库。主库或其它备库可以使用物理备库的备份。在DG环境下,必须使用catalog来管理RMAN元数据。逻辑对RMAN来说是不同的备库,因为它拥有不同的DBID。 See Also: Oracle Data Guard Concepts and Administration to learn how to use RMAN in a Data Guard environment |
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A copy of the primary database that you can use for testing purposes. The DBID is different from the database from which it was created. 多重数据库,主库的复制,DBID与主库不同。 |
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A disk location that you can use to store recovery-related files such as control file and online redo log copies, archived redo logs, flashback logs, and RMAN backups. Oracle Database and RMAN manage the files in the fast recovery area automatically. 磁盘空间用来存储备份相关的文件,如控制文件、联机日志、归档日志、闪回日志、RMAN备份。数据库和RMAN自动管理FRA |
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A vendor-specific application that enables RMAN to back up to a storage system such as tape 介质管理器,比如磁带驱动器 |
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A vendor-specific repository of metadata about a media management application 介质管理器的元数据恢复目录 |
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Oracle Enterprise Manager |
A browser-based interface to the database, including backup and recovery through RMAN ORACLE企业管理器 |
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