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51CTO
21 天
为什么 DTS 升级 MySQL 会造成查询缓慢?
MySQL 官方给出的建议是:在实际使用中,可以通过检查 Opened_tables (打开过的表的数量总和)变量来确定是否需要增加表缓存。平时我们可以通过执行 show global status 看到该值。 大家好,我是煎鱼。 最近我有一个朋友遇到了一个 MySQL 相关的问题,在开启 DTS 升级 ...
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