GV$RESERVED_WORDS definition in Oracle Database 10.2 / www.oracledba.ru
GV$RESERVED_WORDS
select
inst_id, -- INST_ID NUMBER
keyword, -- KEYWORD VARCHAR2(30)
length, -- LENGTH NUMBER
decode -- RESERVED VARCHAR2(1)
(mod (trunc (type/2), 2), 0, 'N', 1, 'Y', '?') reserved,
decode -- RES_TYPE VARCHAR2(1)
(mod (trunc (type/4), 2), 0, 'N', 1, 'Y', '?') res_type,
decode -- RES_ATTR VARCHAR2(1)
(mod (trunc (type/8), 2), 0, 'N', 1, 'Y', '?') res_attr,
decode -- RES_SEMI VARCHAR2(1)
(mod (trunc (type/16), 2), 0, 'N', 1, 'Y', '?') res_semi,
decode -- DUPLICATE VARCHAR2(1)
(mod (trunc (type/32), 2), 0, 'N', 1, 'Y', '?') duplicate
from
x$kwddef