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Oracle rman中restore和recover的区别

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Jun 07, 2016 pm 05:16 PM

Oracle rman中recover和restore的区别：restore just copy the physical file, recover will consistent the database.restore 是

Oracle rman中recover和restore的区别：

restore just copy the physical file, recover will consistent the database.

restore 是还原，文件级的恢复。就是物理文件还原。
recover 是恢复，数据级的恢复。逻辑上恢复，比如应用归档日志、重做日志，全部同步，保持一致。

用我自己的土话讲就是，，用restore先把备份文件拷贝到数据库目录下进行替换，再用recover经过一些处理，数据库就恢复正常了。

1、restore 命令：用于还原已经备份的数据文件。
（1）、restore database 还原所有的数据文件。
（2）、restore tablespace 还原特定表空间的数据文件。
（3）、restore datafile 还原特定的数据文件。
（4）、restore controlfile 还原控制文件。
（5）、restore archivelog 还原归档日志文件。

2、recover 命令：当数据库需要应用归档日志文件恢复数据文件时，使用recover命令。使用该命令数据库系统会自动应用归档的日志文件。
（1）、recover database 恢复所有的数据文件。
（2）、recover tablespace 恢复特定表空间的数据文件。
（3）、recover datafile 恢复特定的数据文件。

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