ラッチ全体に対するミス率などを把握したい
select sum(gets) GETS,sum(misses)*100/decode(sum(gets),0,1,sum(gets)) MISSES_RATE, sum(spin_gets)*100/decode(sum(misses),0,1,sum(misses)) SPINS, sum(immediate_gets) IMGETS, sum(immediate_misses)*100/decode(sum(immediate_gets),0,1,sum(immediate_gets) ) IMMISSES_RATE from v$latch; /

