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ORA-19721: Cannot find datafile with absolute file number string in tablespace string ORACLE 报错故障修复

2023-11-05 08:43

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文档解释

ORA-19721: Cannot find datafile with absolute file number string in tablespace string

Cause: Can not find one of the datafile that should be in the Pluggable Set.

Action: Make sure all datafiles are specified via import command line option or parameter files.

这是一个数据库错误，表示无法在指定的表空间中找到以绝对文件号确定的数据文件。

官方解释

ORA-19721 表示ORACLE数据库只能确定数据文件的前一部分，而没有办法确定文件后续部分的数据。

常见案例

通常这种错误会发生在物理磁盘空间损坏时，实例ASC字典结构中维护的文件信息不准确，或者运行一般文件命令时，文件编号无法映射到文件磁盘上，也会出现这样的信息。

正常处理方法及步骤

1、按照文件号从系统字典中查找对应的文件名；

2、如果能找到相应的文件，使用oracle建议的命令重启受影响的实例；

3、如果找不到文件，则使用还原恢复，从相应的备份把文件恢复出来，重启受影响的实例。

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ORA-19721: Cannot find datafile with absolute file number string in tablespace string ORACLE 报错故障修复

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