oracle 11g uninstall perfectly
CreateTime--2018-04-22 17:07:19
Author:Marydon
For the uninstallation of the oracle database, be sure to uninstall it cleanly, otherwise, when you try to install oracle again, it will always fail to install.
http://jingyan.baidu.com/article/922554468d4e6b851648f4e3.html