实例突然启动不了 报错：ora-01172 ora-01151 有遇到过的，请指点。急等！

[sunshine008]

只能启动到装配数据库完成 最后打开数据库时候错误号
ora-01172:recovery of thread 1 stuck at block 831 of file 2
ora-01151:use media recovery to recover block,restore backup if needed

[csdnhjl]

Cause: Crash recovery or instance recovery could not apply a change to a block because it was not the next change. This can happen if the block was corrupted and then repaired during recovery.

Action: Do a RECOVER DATAFILE for the file containing the block. If this does not resolve the problem, then restore the file from a backup and recover it.

数据库的某个文件的某个block损坏了。找到这个块的文件，用备份替换这个文件，并改变它的存储位置。

[qiuyang_wang]

数据库块出现错误，修复一下就可以了。

[sunshine008]

当时我没有选择归档模式，所以现在根本就没有办法修复的，按照它的错误提示也修复不了。

[sunshine008]

这种情况一般都是什么原因引起的呢？以后我怎么避免呢。我前天将回滚段的设置为可以扩展，现在就出现这种问题了。