What three functions can the oracle user perform?

You created a Database as a Service (DBaaS) instance. This action also created a virtual machine and configured it for the DBaaS instance. It also created two
user accounts. One of the users is oracle.
What three functions can the oracle user perform?

A.
Grant privileges and roles to database users.

B.
Create database users.

C.
Back up and recover databases.

D.
Create tablespaces.

E.
Reboot a VM.

F.
Use the sudo command to perform root user access operations.

Explanation:
oracle is the Oracle Database administrator account you use to access the system and perform non-root database administration tasks. A home directory, /home/
oracle, is created for this user. This user cannot use the sudo command to perform operations that require root-user access. Additionally, by default you cannot
connect as this user to the compute node using SSH. You can add the public key to the user’s $HOME/.ssh/authorized_keys file to grant persistent SSH access, or
you can connect as the opc user and then use the sudo -s command to start a root-user command shell, followed by an su – oracle command to switch to the oracle
user.
Incorrect Answers:
F: root is the root administrator for the system. You do not have direct access to this account. To perform operations that require root-user access, use the sudo
command as the opc, not the oracle, user.
https://docs.oracle.com/en/cloud/paas/database-dbaas-cloud/csdbi/linux-user-accounts-rac.html
http://www.oracle.com/webfolder/technetwork/tutorials/obe/cloud/dbaas/obe_dbaas_administering_your_database_cloud_service/
obe_dbaas_administering_your_database_cloud_service.html