V$SES_OPTIMIZER_ENV definition in Oracle Database 11.2
V$SES_OPTIMIZER_ENV
select
SID, -- SID NUMBER
ID, -- ID NUMBER
NAME, -- NAME VARCHAR2(40)
SQL_FEATURE, -- SQL_FEATURE VARCHAR2(64)
ISDEFAULT, -- ISDEFAULT VARCHAR2(3)
VALUE -- VALUE VARCHAR2(25)
from
GV$SES_OPTIMIZER_ENV
where
INST_ID = USERENV('Instance')