More and more people are using UUID’s to identify records in their database. As you already know, for MySQL’s storage engine (InnoDB) the primary key is very important ! (for performance, memory and disk space). See the following links: …
You know how much I praise and like MySQL Shell but if like me, for you too, old habits die hard, I advise you to create these different aliases in your ~/.bashrc (or ~/.bash_aliases) file to force yourself to use…
Recently, somebody asked me how he can find the long running transactions in MySQL. I already have one MySQL Shell plugin that allows you to find the current transactions sorted by time. The plugin allows you to also get the…
Since 8.0.30, you have the possibility to modify the InnoDB Redo Log Capacity online. An undersized Redo Log Capacity is problematic and lead to performance issues. However, it’s not recommended to oversize the Redo Log either. Redo Log files consume…
During my summer holidays, we released MySQL 8.0.30. MySQL 8.0.30 was released on July 26th 2022. If you are using 8.0.29, it’s highly recommended to upgrade as there was a bug corrupting InnoDB files in a rare and specific case.…
Usually, I receive a lot of emails, and sometimes I read them on my phone and then… I forgot about them.. (shame on me). On my Linux desktop, I used to use Get Things Gnome for a long time, due…
If you write C applications that need to connect to MySQL, you can use the MySQL C API aka libmysqlclient. The MySQL C API replaces the outdated MySQL-Connector-C. If you want to use MySQL 8.0 as a Document Store with…
When performing physical backup on system that are heavily used, it can happen that the backup speed cannot keep up with the redo log generation. This can happen when the backup storage is slower than the redo log storage media…
Full table scans can be problematic for performance. Certainly if the scanned tables are large. The worst case is when full table scans are involved in joins and particularly when the scanned table is not the first one (this was…
Today, the book I would like to recommend is Efficient MySQL Performance – Best Practices and Techniques, Daniel Nichter, O’Reilly, 2021. I participated (just a bit) in the writing of this book as technical reviewer with Vadim and Fipar. I…
This is the second article of the series dedicated to MySQL trending. As I wrote before, understanding your workload and seeing the evolution of it over time can help anticipating problems and work on solutions before the breakdown. This article…
This is the first article of a new blog series related to MySQL books. Let’s start with MySQL Workshop, a practical guide to working with data and managing databases with MySQL written by Thomas Pettit and Scott Cosentino. The editor…
As MySQL Community Manager, I am an employee of Oracle and the views expressed on this blog are my own and do not necessarily reflect the views of Oracle.
You can find articles I wrote on Oracle’s blog.