V$RSRCMGRMETRIC_HISTORY definition in Oracle Database 11.2
V$RSRCMGRMETRIC_HISTORY
SELECT
begin_time, -- BEGIN_TIME DATE
end_time, -- END_TIME DATE
intsize_csec, -- INTSIZE_CSEC NUMBER
sequence#, -- SEQUENCE# NUMBER
consumer_group_id, -- CONSUMER_GROUP_ID NUMBER
consumer_group_name, -- CONSUMER_GROUP_NAME VARCHAR2(30)
cpu_consumed_time, -- CPU_CONSUMED_TIME NUMBER
cpu_wait_time, -- CPU_WAIT_TIME NUMBER
cpu_decisions, -- CPU_DECISIONS NUMBER
cpu_decisions_exclusive, -- CPU_DECISIONS_EXCLUSIVE NUMBER
cpu_decisions_won, -- CPU_DECISIONS_WON NUMBER
io_requests, -- IO_REQUESTS NUMBER
io_megabytes -- IO_MEGABYTES NUMBER
FROM
gv$rsrcmgrmetric_history
WHERE
inst_id = USERENV('INSTANCE')