dba索引

MongoDB,CloudDBA-索引智能诊断，帮忙用户快速定位及改进慢查询根源，给出慢查询的详细分析及智能化推荐索引添加，解决慢查询问题.MongoDB慢查询多，运维繁琐客户.

云数据库MongoDB发布CloudDBA索引推荐功能，能自动识别慢查询并针对性给出索引建议，协助优化数据库性能.MongoDB性能调优、慢查询分析场景.

索引找出哪些表的 Index 需要改进在指定数据库中查找哪些表的 Index 需要改进根据缓存的查询计划判断 SP 是否需要优化发现那些 Index 的写远多于读的表查看 Index 的 Statistics 最后更新时间查看哪些 Index 被修改的最频繁查看 ...

人人都是 DBA（XIII）索引信息收集脚本汇编

DBA专家门诊一期：索引与sql优化

DBA专家门诊一期：索引与sql优化做过数据库管理的同学都知道，sql性能很大程度上决定着数据库系统的工作能力，很多业务可能会因为sql写的不好，缺失索引等导致数据库系统性能低下，甚至导致故障发生，我们本期的门诊专题就是索引与sql优化...

《MySQL DBA修炼之道》——3.5 索引

本节书摘来自华章出版社《MySQL DBA修炼之道》一书中的第3章，第3.5节，作者：陈晓勇，更多章节内容可以访问云栖社区“华章计算机”公众号查看 3.5 索引 3.5.1 索引介绍数据库索引，是数据库管理系统中一个排序的数据结构，用于协助快速...

DBA_INDEXES.CLUSTERING_FACTOR 索引的群集因子初探

测试思路：创建两张内容相同但索引字段是无序和升序的数据表，数据来源为dba_objects，从而测试对索引集群因子和其他索引统计数据的影响。create table test_objects1 as select*from dba_objects;create table test_objects2 as select*...

DBA_INDEXES.CLUSTERING_FACTOR 索引的群集因子初探（原）

然后给出中文概念：在索引的分析数据上clustering_factor是一个很重要的参数，表示的是索引和表之间的关系，因为，索引是按照一定的顺序排列的，但是，对于表来说是按照一种heap的形式存放，每一行可能分布在段上任何一个块上，所以要是...

干货分享：DBA专家门诊一期：索引与sql优化问题汇总

各位亲爱的云友，非常感谢大家踊跃参加DBA专家门诊一期：索引与sql优化，很多云友都提出了自己的问题，门诊主任医师玄惭对大家提的问题一一作了解答。现已整理好这些问题，分享在此，欢迎来拿，绝对干货！篇幅较长，耐心细看！我们将赠送每...

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云数据库 HBase 版

云数据库HBase是面向大数据领域的一站式NoSQL服务，100%兼容开源HBase并深度扩展，支持海量数据下的实时存储、高并发吞吐、轻SQL分析等，是风控、推荐、广告、物联网、车联网、Feeds流、数据大屏等场景首选数据库。

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