[oracle@db ~]$ dbca
DISPLAY not set.
Set DISPLAY environment variable, then re-run.

[oracle@db dbhome_1]$ DISPLAY=:1.0 ; export DISPLAY
[oracle@db dbhome_1]$ xhost +
xhost:  unable to open display ":1.0"


[oracle@db ~]$ ssh -XY oracle@192.168.0.33

The authenticity of host '192.168.0.33 (192.168.0.33)' can't be established.
ECDSA key fingerprint is SHA256:DJqwvDyW3jgM6AvHwZcXdCMGH3rs+O7WqwnaPCLpw2E.
ECDSA key fingerprint is MD5:6f:1e:09:c1:3c:c6:b1:7c:ac:3b:0e:61:2b:21:77:36.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.0.33' (ECDSA) to the list of known hosts.
oracle@192.168.0.33's password: 
Last login: Fri Jan 17 12:10:39 2020 from db.lalteer.com

[oracle@db ~]$ dbca