How can Oracle add a user to a user group?

To add a user to a user group, you can follow these steps:

1. Log in to the Oracle database with administrator privileges.
2. Establish a role named group_name.
3. Create a new user with the given username and password.
4. Give permission to the group named group_name for the username.
5. Ensure that both users and user groups have been successfully created and assigned permissions.

By following these steps, you can successfully add a user to a user group.