SQL> select * from v$reserved_words;

KEYWORD                            LENGTH
------------------------------ ----------
MODE                                    4
BULK                                    4
WAIT                                    4
SESSIONTIMEZONE                        15
EXTENTS                                 7
SESSION_CACHED_CURSORS                 22
SET_TO_JOIN                            11
PUSH_SUBQ                               9
OID                                     3
START                                   5
ROLE                                    4
...