1. It is said on the Internet that environmental variables are not matched , And then it's done to make it work , The result is wrong
Open the configuration file and find a red mark , Delete and change line , Problem solving
2. Execute again sqlplus Report error again , This time, it's the reason that the paths don't match
above bin Remove , It's matched below
3. It's over source once , Execute again
To modify environment variables, you must source Make it effective !!!