A missing quote made MySQL scan 7.2 million rows. Here's how EXPLAIN exposed the problem and what it taught us about safe ...
MariaDB 13.0 has officially reached Stable status with the release of version 13.0.2, bringing several new SQL, InnoDB, optimizer, and replication improvements to the open-source database server. One ...
Our Stellar Repair for MySQL review tests recovery of crashed MyISAM and InnoDB tables after a forced shutdown, with native recovery steps.
When innodb_snapshot_isolation is ON, if a row you are trying to rewrite (or a row you are trying to read with a lock) has been changed and committed by another connection after that baseline point in ...
last week dbx-bot bot 1w ago 以下 Issue 可能与当前问题相关： [Bug] mysql8.0.30 show engine innodb status显示异常 #5977 这些结果由机器人自动检索，尚未确认重复。 如属于同一问题，建议在已有 Issue 中补充信息。
四个维度逐位相同。 另外注意 idx_logs_user_id 出现了 n_diff_pfx02 —— 它声明上只有一列，这个"第二列"正是 InnoDB 追加的主键，直接印证了存储层的扩展行为。 information_schema.statistics 的基数同样吻合： ...
Transform your industry with AWS cloud solutions. Access proven architectures, compliance guides, and success stories of customers using AWS products tailored to your sector. Explore AWS solutions for ...
Benchmark da Percona mostra quando thread pool multiplica o throughput do MySQL por até 18x e quando ele atrapalha. Veja os ...
前几天帮同事排查一个线上诡异的数据不一致问题，两个服务同时在改同一张订单表，其中一个服务提交了更新，另一个服务却一直读到旧值。查到最后，问题就出在 InnoDB 的 MVCC 可见性判断上。
innodb_snapshot_isolation が ON のときは、書き換えようとした行 (またはロック付きで読もうとした行)が、その基準の時点よりあとに別の接続によって変えられ、コミットされていると、ERROR 1020 でトランザクション全体を巻き戻します。OFF のときは、そのまま書き換えを通します。 ON は「黙って ...
Um --where seletivo no pt-online-schema-change pode disparar Flow Control no Galera e travar clusters Percona XtraDB em ...
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