{"height":"190","provider_url":"https://hatena.blog","published":"2019-03-30 00:06:15","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F03%2F30%2F000615\" title=\"\u30d7\u30e9\u30f3\u30ca\u7d71\u8a08\u60c5\u5831\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u6570 - 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>","version":"1.0","author_name":"HTN20190109","url":"https://htn20190109.hatenablog.com/entry/2019/03/30/000615","provider_name":"Hatena Blog","width":"100%","author_url":"https://blog.hatena.ne.jp/HTN20190109/","description":"Oracle \u30c7\u30d5\u30a9\u30eb\u30c8\u306fOracle\u304c\u6c7a\u5b9a select dbms_stats.get_prefs('ESTIMATE_PERCENT') from dual; exec DBMS_STATS.SET_GLOBAL_PREFS('ESTIMATE_PERCENT','10'); MySQL https://dev.mysql.com/doc/refman/5.6/ja/innodb-persistent-stats.html --\u30b0\u30ed\u30fc\u30d0\u30eb\u30ec\u30d9\u30eb show variables like '%stats%'; vim /etc/my.cnf innodb_stats_persistent_sa\u2026","blog_url":"https://htn20190109.hatenablog.com/","categories":["DB"],"title":"\u30d7\u30e9\u30f3\u30ca\u7d71\u8a08\u60c5\u5831\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u6570","type":"rich","image_url":null,"blog_title":"HTN20190109\u306e\u65e5\u8a18"}