V$MAP_EXT_ELEMENT definition in Oracle Database 11.2
V$MAP_EXT_ELEMENT
select
ELEM_IDX, -- ELEM_IDX NUMBER
NUM_ATTRB, -- NUM_ATTRB NUMBER
ATTRB1_NAME, -- ATTRB1_NAME VARCHAR2(256)
ATTRB1_VAL, -- ATTRB1_VAL VARCHAR2(256)
ATTRB2_NAME, -- ATTRB2_NAME VARCHAR2(256)
ATTRB2_VAL, -- ATTRB2_VAL VARCHAR2(256)
ATTRB3_NAME, -- ATTRB3_NAME VARCHAR2(256)
ATTRB3_VAL, -- ATTRB3_VAL VARCHAR2(256)
ATTRB4_NAME, -- ATTRB4_NAME VARCHAR2(256)
ATTRB4_VAL, -- ATTRB4_VAL VARCHAR2(256)
ATTRB5_NAME, -- ATTRB5_NAME VARCHAR2(256)
ATTRB5_VAL -- ATTRB5_VAL VARCHAR2(256)
from
gv$map_ext_element
where
inst_id = USERENV('Instance')