Hi Otto,
You can run this statement.
select SYS.P_USERS_.NAME, SYS.P_USERS_.OID,SYS.P_USER_PASSWORD_.PASSWORD_CHANGE_TIME from SYS.P_USER_PASSWORD_ right join SYS.P_USERS_ on SYS.P_USER_PASSWORD_.OID = SYS.P_USERS_.OID where SYS.P_USER_PASSWORD_.PASSWORD_CHANGE_TIME is null
Cheers,
Pawel