2016-0318
--查看session和process上限和峰值
SELECT RESOURCE_NAME,MAX_UTILIZATION,LIMIT_VALUE FROM V$RESOURCE_LIMIT;
--查看oracle缓存的命中率
select 1 - ((physical.value - direct.value - lobs.value) / logical.value)
     "Buffer Cache Hit Ratio"
  from v$sysstat physical,v$sysstat direct,v$sysstat lobs,v$sysstat logical
  where physical.name = 'physical reads'
  an 阅读全文>>
                
标签: Oracle 数据库优化 oracle优化 阅读:1631