MySQL 9.7 LTS Support Lands Released May 8, 2026 · GitHub Release

v1.26.5 introduces a MySQL Component build for MySQL 8.4 LTS and 9.7 LTS, a unified logging abstraction, and a set of plugin stability fixes. The plugin path for MySQL 8.0, 8.4, and 9.0 is unchanged.

Why the Component architecture matters

MySQL has been deprecating the legacy plugin API in favor of the Component architecture since 8.0. Components install via INSTALL COMPONENT, integrate through typed service interfaces, and are better isolated from server internals — meaning fewer breakages across MySQL minor versions and a supported path forward as the plugin API winds down. For MyVector, this move isn’t optional in the long run: the component model is where MySQL’s extension ecosystem is heading, and building on it now means users on …

In modern application development, observability is no longer optional. It is a core requirement for stable operations, faster troubleshooting, and better understanding of system behavior. Databases are especially important because they often sit at the center of application performance. When a database becomes slow, overloaded, or unavailable, the impact is usually felt across the entire […]

May 2026 · 5 min read. Alkin Tezuysal

Cross blog from Oracle https://blogs.oracle.com/mysql/mysql-9-7-is-out-and-the-community-wins

MySQL 9.7 came out on April 21 and I’ve been going through the release notes so you don’t have to. The short version: Oracle has made several previously Enterprise-only features available in the Community Edition; the Hypergraph Optimizer is now free for everyone; and if you’re still on MySQL 8.0, it has reached End-of-Life. Like right now. We’ll get to that.

Let’s go through what matters most.

First: MySQL 8.0 has reached End-of-Life

MySQL 8.0.46 shipped alongside 9.7, and it is the last 8.0 release. As of April 2026, 8.0 is officially End-of-Life. No more security patches. No …

Alkin Tezuysal Director of Services at Altinity Inc. MySQL 9.7 came out on April 21 and I’ve been going through the release notes so you don’t have to. The short version: Oracle has made several previously Enterprise-only features available in the Community Edition, the Hypergraph Optimizer is now free for everyone, and if you’re still on MySQL 8.0, it […]

Many applications start with a simple database setup: create one MySQL user, give it access to the application schema, put the credentials in the app config, and move on. That may work at first, but it is not a good long-term security model. A better approach is to use separate MySQL users for separate application […]

In this blog, I am going to share a real-world debugging case study where a routine Percona XtraDB Cluster node restart led to an unexpected failure. I will walk through what we observed, what we checked, and how we ultimately identified the root cause.

Let’s see how the maintenance goes. It was supposed to be a simple restart. The kind you’ve done a hundred times. You SSH in, run the maintenance, bring the node back up, and go grab a coffee. Except this time, the coffee went cold on the desk… because MySQL refused to start.

The Problem

The error log of Percona XtraDB Cluster (8.0) had the following information:

2025-11-05T05:26:10.982984Z 0 [ERROR] [MY-000059]   [Server] SSL error: Unable to get certificate from '/var/lib/mysql/server-cert.pem'.
2025-11-05T05:26:10.983030Z 0 [Warning] [MY-013595] [Server] Failed to initialize TLS for channel: mysql_main. See below for the description of exact issue. …

Percona Monitoring and Management is a great open source database monitoring, observability, and management tool. Query analytics is one of the prominent features DBA uses actively to trace the incidents and query performance identification.

We all know and love the Query Analytics (QAN) dashboard… It’s the first place we look when an incident alert fires or when a developer asks, “Why is the app slow?” or “What was going on during the midnight production outage?”

But sometimes, the standard dashboards just don’t tell the whole story or maybe are not clear enough. QAN is great, but shouldn’t we have more? If you have PMM running, you already have a Ferrari engine under the hood: ClickHouse. Most of us just drive it in first gear using the default UI.

In this post, we are going to take the training wheels off. We will bypass the standard QAN interface and talk directly to the ClickHouse backend to …

Recently, we received an alert for one of our Managed Services customers indicating that the auto_increment value for the table was 80% of its maximum capacity. The column was INT UNSIGNED, which has a limit of 4,294,967,295.

At 80%, we have enough time to change it to BIGINT.…. Right? Let’s see.

So we used pt-online-schema-change to perform the alter.

It started running at a good pace but slowed over time.

Why?

Well, let’s look at the definition of the table:

mysql> show create table myschema.mytableG
*************************** 1. row ***************************
       Table: mytable
Create Table: CREATE TABLE `mytable` (
  `id` int unsigned NOT NULL AUTO_INCREMENT,
  `long_column` …

Once you move from self-managed MySQL to a MySQL DB System with HeatWave on OCI, the tuning story changes in an important way. On a self-managed server, you worry about two layers: MySQL and the operating system. On OCI MySQL DB Systems with HeatWave, Oracle runs your MySQL instance as a fully-managed service and explicitly […]

MySQL 9.7 introduces a long-requested improvement: Child table triggers are executed during SQL-layer foreign key cascades. Historically, cascades executed inside InnoDB did not invoke child table triggers, which created gaps in auditing, derived data maintenance, and observability. When a parent row change triggered cascading changes in child tables, those child table triggers were not executed. This […]