I've installed and created non-CDB database (single tenant) database. Created a user account using the SYS user, granted it the CONNECT and CREATE SESSION roles. When I attempt to login using the newly created account I get the "ORA-010170: invalid username/password; login denied" error.
I'm I missing something with respect to the Oracle 12c Standard database?? Since I've created a "normal" database I should be able to login with a non SYS account.
ALTER USER account IDENTIFIED BY password ACCOUNT UNLOCK;