Installation of Oracle Database 19c on RHEL 8.3

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I am trying to install Oracle Database 19c on RHEL 8.4, i follow all the steps on Oracle-Base and Oracle.com, the DB is installed, but when try to login through the Oracle User at the login screen it shows a blank screen for few seconds and then comes back to login screen and then if i try to login through root or other user then the same thing happens with those users also. But if I restart my linux machine and login using root or non oracle user then i am taken into desktop, but cannot login using Oracle user which i created for oracle installation.

Also please provide the steps or references for installation of Oracle 19c on RHEL 8.3

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