During installation of Oracle db 21c Express Edition
Check the status of the environment variable installation part Make sure ORACLE_HOME and TNS_ADMIN are not set. I was wondering what this means, so I tried it without oracle_home, but there is a problem even if I install oracle_home
If I open a cmd window and type sqlplus oracle_home it is set up fine. Version can be checked
However, prerequisite checks cannot install environment variables. Not working after rebootenter image description here