Hi Ormany,
You can do as below:-
Connect to dbmcli -d <DB NAME> -u control,<password>
Then try below commands
sql_connect superdba,<password>
sql_connect superdba,admin
sql_execute select * from users --> This will give you list of users
ALTER PASSWORD <DBA_user> <new_password> for changing other user passwords.
And for superdba you can use below:-
ALTER PASSWORD <old password> to <new password>
Do let us know if this helps.
Regards,
Ram