I'm new on Linux environment. For this task, I am using Centos 7 in VirtualBox and trying to follow the guide to install Oracle Database 18c XE. After setting the config and profile, I finally get the oracle to work. However, when I tried to create a new Database via dbca, the following error prompted.
[project@localhost bin]$ echo $ORACLE_HOME
/opt/oracle/product/18c/dbhomeXE
[project@localhost bin]$ cd $ORACLE_HOME/bin
[project@localhost bin]$ dbca
bash: /opt/oracle/product/18c/dbhomeXE/bin/dbca: Permission denied
I've only created 1 user (project) for this practicing purpose.