1.6.2 Changing the Exadata Storage Server Passwords
As the root user, use the passwd command to change
        operating system user passwords on Exadata Storage Server.
               
The default user accounts on Exadata Storage Servers are
                    root, celladmin, and
                    cellmonitor.
                  
At the operating system prompt, use the following command, where user_name identifies the user account that you want to change:
# passwd user_nameParent topic: Changing Component Passwords