{"provider_name":"Hatena Blog","categories":["DB"],"width":"100%","published":"2019-07-09 01:38:57","url":"https://htn20190109.hatenablog.com/entry/2019/07/09/013857","type":"rich","author_url":"https://blog.hatena.ne.jp/HTN20190109/","height":"190","blog_url":"https://htn20190109.hatenablog.com/","image_url":null,"title":"\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387","provider_url":"https://hatena.blog","version":"1.0","blog_title":"HTN20190109\u306e\u65e5\u8a18","description":"Oracle SELECT 1-(phy.value/(cur.value+con.value)) \"cache hit ratio\" FROM v$sysstat cur, v$sysstat con, v$sysstat phy WHERE cur.name = 'db block gets from cache' AND con.name = 'consistent gets from cache' AND phy.name = 'physical reads cache' ; MySQL http://parameter.jp/post-265/ show engine innodb \u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F07%2F09%2F013857\" title=\"\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387 - HTN20190109\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"HTN20190109"}