System Tables Views Oracle PLSQL

SQL>
SQL> SELECT username, account_status
  2  FROM dba_users;
USERNAME                       ACCOUNT_STATUS
------------------------------ --------------------------------
RNTSOFT                         OPEN
SYS                            OPEN
SYSTEM                         OPEN
ANONYMOUS                      OPEN
MDSYS                          EXPIRED & LOCKED
OUTLN                          EXPIRED & LOCKED
DIP                            EXPIRED & LOCKED
TSMSYS                         EXPIRED & LOCKED
FLOWS_FILES                    EXPIRED & LOCKED
CTXSYS                         EXPIRED & LOCKED
DBSNMP                         EXPIRED & LOCKED
USERNAME                       ACCOUNT_STATUS
------------------------------ --------------------------------
FLOWS_020100                   EXPIRED & LOCKED
XDB                            EXPIRED & LOCKED
HR                             EXPIRED & LOCKED
14 rows selected.