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using backup controlfile和 until cancel 区别

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Release: 2016-06-07 17:17:38
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1. 如果丢失丢失当前控制文件,用冷备份中的控制文件恢复的时候。用来告诉oracle,不要以controlfile中的scn作为恢复的终点;2.

1. recover database using backup controlfile

2. recover database until cancel

3. recover database using backup controlfile until cancel;

4. recover database until cancel using backup controlfile;

区别:

1. 如果丢失丢失当前控制文件,用冷备份中的控制文件恢复的时候。用来告诉Oracle,不要以controlfile中的scn作为恢复的终点;

2. 如果丢失current/active redo的时候。手动指定终点。

3. 如果 丢失当前controlfile并且current/active redo都丢失,会先去 自动 应用归档日志,可以实现最大的恢复;

4. 如果 丢失当前controlfile并且current/active redo都丢失,,以旧的redo中的scn为恢复终点。因为没有应用归档日志,所有会丢失数据。

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