{"categories":["DB"],"url":"https://htn20190109.hatenablog.com/entry/2021/04/01/215601","provider_url":"https://hatena.blog","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2021%2F04%2F01%2F215601\" title=\"undo\u4f7f\u7528\u91cf\u78ba\u8a8d - 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>","description":"MySQL https://yoku0825.blogspot.com/2020/10/innodbhistory-list-length.html (8.0.22) -- 1. REPEATABLE-READ\u8aad\u307f\u53d6\u308a\u4e00\u8cab\u6027\u7528\u306eUNDO\u30ec\u30b3\u30fc\u30c9\u6570\u3042\u308b\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u304b\u3089\u30c6\u30fc\u30d6\u30eb\u3092\u7e70\u308a\u8fd4\u3057\u66f4\u65b0\u3001\u30b3\u30df\u30c3\u30c8\u3059\u308b\u3068\u540c\u6642\u306b\u5225\u30bb\u30c3\u30b7\u30e7\u30f3\u304b\u3089\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u958b\u59cb\u3057\u3066\u305d\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u53c2\u7167\u3059\u308b\u3068\u5897\u3048\u3066\u3044\u304f select *from sys.metricswhere variable_name = 'trx_rseg_history_len'; select *from information_schema.in\u2026","author_url":"https://blog.hatena.ne.jp/HTN20190109/","title":"undo\u4f7f\u7528\u91cf\u78ba\u8a8d","author_name":"HTN20190109","height":"190","blog_url":"https://htn20190109.hatenablog.com/","published":"2021-04-01 21:56:01","image_url":null,"version":"1.0","width":"100%","provider_name":"Hatena Blog","blog_title":"HTN20190109\u306e\u65e5\u8a18"}