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Oracle DB 使用RMAN恢复目录

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Release： 2016-06-07 17:32:56
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RMAN 资料档案库数据始终存储在目标数据库的控制文件中。此外，它也可以存储在一个名为ldquo;恢复目录rdquo;的单独数据库中。恢

虽然可以使用控制文件作为RMAN 的唯一资料档案库，但是控制文件用于存储备份活动记录的空间有限。使用恢复目录时，可以存储更长的备份历史记录。这样可以恢复到比控制文件中的历史记录更早的时间。

如果要使用RMAN 存储脚本，就必须使用恢复目录。

使用恢复目录时，所有已注册目标的备份和恢复信息都存放在一个位置，因此可通过以恢

可以使用BACKUP ... KEEP命令创建备份并使其保留时长不同于所配置的保留策略指定的时长。KEEP FOREVER子句指定备份或副本永不失效并要求使用恢复目录，以便备份记录可无限期保留。

REPORT SCHEMA命令列出目标数据库中的表空间和数据文件。如果添加AT [time|scn|logseq]选项，，则可以查看过去某个时间的信息。只有在使用恢复目录时才能使用AT选项。

Related labels：
RMAN恢复目录 Oracle DB 使用RMAN恢复目录
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