GV$STREAMS_TRANSACTION definition in Oracle Database 11.2
GV$STREAMS_TRANSACTION
SELECT
inst_id, -- INST_ID NUMBER
strmname_knsttxn, -- STREAMS_NAME VARCHAR2(30)
type_knsttxn, -- STREAMS_TYPE VARCHAR2(10)
xidusn_knsttxn, -- XIDUSN NUMBER
xidslt_knsttxn, -- XIDSLT NUMBER
xidsqn_knsttxn, -- XIDSQN NUMBER
msg_count_knsttxn, -- CUMULATIVE_MESSAGE_COUNT NUMBER
actual_msg_count_knsttxn, -- TOTAL_MESSAGE_COUNT NUMBER
first_msg_time_knsttxn, -- FIRST_MESSAGE_TIME DATE
first_msg_num_knsttxn, -- FIRST_MESSAGE_NUMBER NUMBER
last_msg_time_knsttxn, -- LAST_MESSAGE_TIME DATE
last_msg_num_knsttxn, -- LAST_MESSAGE_NUMBER NUMBER
first_msg_pos_knsttxn, -- FIRST_MESSAGE_POSITION RAW(64)
last_msg_pos_knsttxn, -- LAST_MESSAGE_POSITION RAW(64)
nosxid_knsttxn -- TRANSACTION_ID VARCHAR2(128)
FROM
x$knsttxn