A Unique Foreign Key issue in MySQL 8.4
Kedar
Recently, a friend reached out to me for help after encountering an error while restoring a MySQL dump during an upgrade from MySQL 8.0 to 8.4. The error read: At…
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MySQL
81 posts
How to Resolve Disk Space Issues in PMM: Case Study
Recently, I encountered a Percona Monitoring and Management (PMM) server that was rapidly approaching complete disk exhaustion. This post outlines the steps taken to identify the issue and reclaim disk…
MySQL Data Archiving basics – considerations, mistakes, best practices
This blog is dedicated to MySQL data archiving; we’ll break down from the basics of what data archival is, why it matters, best practices and scenarios. We will also see…
Podcast: Duplicate Indexes in MySQL
In this podcast, we’ll explore the issue of duplicate indexes in MySQL; including redundant index, foreign keys, left-prefixed secondary index /w primary key, and how to tackle the issue at…
Understanding Return Codes of pt-upgrade: A quick guide
Interpreting the results and exit codes of your upgrade tests is essential for assessing the process’s outcome. In this blog, we’ll explore the significance of pt-upgrade return codes and how…
A year in MySQL Blogging – top blogs, summary and review
The year 2023 surely was a successful year in MySQL blogging. I managed to publish 24 MySQL blogs in total both personal and Percona blog. This post is a reflection…