oracle重建控制文件的resetlogs选项

最新推荐文章于 2025-06-25 19:55:31 发布

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最新推荐文章于 2025-06-25 19:55:31 发布

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本文介绍了Oracle数据库中控制文件的备份与恢复方法。通过使用SQL命令将控制文件备份为跟踪文件，并提供了两种不同的控制文件恢复策略：一种是在在线日志可用时使用NORESETLOGS选项打开数据库；另一种是在在线日志不可用时使用RESETLOGS选项打开数据库。

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alter database backup controlfile to trace as ‘/home/oracle/controlfile.ora’;

Below are two sets of SQL statements, each of which creates a new
– control file and uses it to open the database. The first set opens
– the database with the NORESETLOGS option and should be used only if
– the current versions of all online logs are available. The second
– set opens the database with the RESETLOGS option and should be used
– if online logs are unavailable.
– The appropriate set of statements can be copied from the trace into
– a script file, edited as necessary, and executed when there is a
– need to re-create the control file.