GV$SESSION_WAIT_HISTORY definition in Oracle Database 11.2
GV$SESSION_WAIT_HISTORY
select
s.inst_id, -- INST_ID NUMBER
s.kslwhsid, -- SID NUMBER
s.kslwhridx, -- SEQ# NUMBER
s.kslwhevt, -- EVENT# NUMBER
s.kslwhetext, -- EVENT VARCHAR2(64)
s.kslwhp1text, -- P1TEXT VARCHAR2(64)
s.kslwhp1, -- P1 NUMBER
s.kslwhp2text, -- P2TEXT VARCHAR2(64)
s.kslwhp2, -- P2 NUMBER
s.kslwhp3text, -- P3TEXT VARCHAR2(64)
s.kslwhp3, -- P3 NUMBER
round(s.kslwhstime/10000), -- WAIT_TIME NUMBER
s.kslwhstime, -- WAIT_TIME_MICRO NUMBER
s.kslwhltime -- TIME_SINCE_LAST_WAIT_MICRO NUMBER
from
x$kslwh s