[INS-08106] Unexpected error occurred while loading the view 'GridPlugPlayInfoUI'

安装RAC GI，将要设置GridPlugPlay信息时，抛出如下错误

[php] view
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SEVERE: [FATAL] [INS-08106] Unexpected error occurred while loading the view 'GridPlugPlayInfoUI' associated to state 'GridPlugPlayInfoUI'.

CAUSE: No additional information available.

ACTION: Contact Oracle Support Services or refer to the software manual.

SUMMARY:

- java.lang.NullPointerException.

Refer associated stacktrace

#oracle.install.commons.util.exception.DefaultErrorAdvisor:458

INFO: Advice is ABORT

SEVERE: Unconditional Exit

这步设置GridPlugPlay信息时，需读取/etc/hosts文件内定义的网络接口信息。

仔细查看hosts文件内容，发现自己把ip地址写错了，随后两个节点都更正再次运行正常了。

另外hosts文件内有无效字符也会出现这个问题。