CPU - Utilization

SELECT cpu.val "Host CPU Utilization (%)" FROM (SELECT metric_name, ROUND (VALUE) AS val FROM SYS.gv_$sysmetric WHERE intsize_csec = (SELECT MAX (intsize_csec)
FROM SYS.gv_$sysmetric WHERE inst_id = 1) AND metric_name = 'Host CPU Utilization (%)'
AND inst_id = 1) cpu;