Record oracle installation steps:
Recommend a good blog several times, I have installed the pro-test effective.
https://www.cnblogs.com/zdyang/p/12580263.html
The following error occurred when installing oracle 42%, don't panic, this is easy to solve.
Solution: Press the windows key and the search box appears, enter net. The following interface appears. Double click to open
Double-click to open and select the listener configuration and click Next
Select reconfiguration and click Next:
Select listener, click Next
Select tcp protocol, click next
Select port 1521, click Next
Select No and click Next
Click Next to complete the monitoring configuration. Then come back and continue to install oracle, I just clicked to try again. Then my oracle was installed successfully.