安装oracle相关连的包时导致yum和rpm都坏了，命令使用不了，出现如下错误提示：
error: Failed to initialize NSS library
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:
版权声明：本文为ZhouyuanLinli原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。