I am currently working my way through the many PHP Frameworks to see how they get on with MySQL 8.  The Frameworks that can take advantage of the MySQL Improved Extension or mysqli can take advantage of the SHA256 Caching Authentication method. But those that are PDO based need to use the older MySQL Native Authentication method.

I wanted to check the PDO based frameworks and today I just happened to be wearing the very nice Symfony shirt I received as part of my presentation at Symfony USA.  So I started with a fresh install of Symfony.  All was going well until it came time to get it to work with MySQL 8 through Doctrine.

Doctrine
Symfony uses Doctrine as an ORM (Object Relational Mapper) and DBAL  (Database Abstraction Layer) as an intermediary to the database.  While I myself am not a big fan of ORMs …

Has you may already know, in MySQL it is possible to set an expiration period for passwords.

It’s not always obvious to see when the password will expire. And most of the time if you don’t pay much attention you will get something like this:

ERROR 1820 (HY000): You must reset your password using
ALTER USER statement before executing this statement.

Let me share you a small query that check for how long your password is still valid in case it was created with an expiration delay or if the global default_password_lifetime is set on …

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If you have an application that need to use multiple connections to the MySQL database for short periods of times, it can be a good to use a connection pool to avoid creating a new connection and going through the whole authentication process every time a connection is needed. For the Python Database API (PEP249), MySQL Connector/Python has had support for connection pools for a long time. With the release of MySQL 8.0.13, the new X DevAPI also has support for connection pools.

This blog will first cover the background of the X DevAPI connection pool feature in MySQL Connector/Python. Then …

Recently, I did some maintenance on Innotop and I merged several pull requests including one to support MySQL 8.0 (thank you yoku0825 for the contribution).

As you know, Innotop is written in Perl and to be able to use it with MySQL 8.0, you need to have Perl DBD for MySQL compatible with MySQL 8.0 too (a driver that support the new default authentication plugin, caching_sha2_password).

If you are using Fedora 29, I created such package and you can download it here: …

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The other day, I was reading a blog by Magnus Hagander about tracking foreign keys throughout a schema in PostgreSQL. I thought it was a good idea, so I decided to look at how you can track foreign key in MySQL.

The way I decided to do it was to start out with a table, then find all tables referencing the table by a foreign key. From this basic (and simple as it will be shown) query, it is possible to create a chain of relations. The key table for the queries is …

The old adage that time is money does not give any hints about buying more time. A MySQL Enterprise subscription does allow you to purchase time. Your technical staff has to do more with less time than ever before and operational delays add up extremely quickly.  Having the right tools when things go critical means staff can do what they need to do, when they need to do it.

So how does MySQL Enterprise Edition buy you more time?

When things inevitably go wrong, searching for free answers to problems on web sites with many dubious or flat out wrong solutions is a waste of precious time.  Informational websites like are fine sources of general information for researching technical issues but not when mission critical services are degraded or down.  An online recommendation to do what very large Enterprise Company does may not make sense for your company if you are not …

MySQL 8.0 Code Contributions (Shutterstock)

An Oracle engineer thanked two Percona engineers by name, along with engineers from Facebook and elsewhere, for their recent MySQL 8.0 source code contributions. Oracle incorporated their work into its latest MySQL production release (8.0.13).

Percona’s Zsolt Parragi authored a patch for a rare replication bug that left locked mutexes in production builds following debug crashes (bug # …

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First of all, thanks to everyone who attended my sessions at the recent Oracle OpenWorld and Code One in San Francisco. It was a great privilege to be allowed to make a number of presentations.

All of the workbooks and scripts from the hands-on labs (HOL) and the slides from the talks have been made available at OpenWorld’s and Code One’s session catalogues. You can download the files by using the OpenWorld catalog searching for my name or the session number (see below). Click on the download icon for each of the presentations you are interested in.

…

Percona is glad to announce the release candidate of Percona XtraBackup 8.0-3-rc1 on October 31 2018. You can download it from our download site and apt and yum repositories.

This is a Release Candidate quality release and it is not intended for
production. If you want a high quality, Generally Available release, use the current stable version (the most recent …

Following the alpha release announced earlier, Percona announces the release candidate of Percona Server for MySQL 8.0.12-2rc1 on October 31, 2018. Download the latest version from the Percona website or from the Percona Software Repositories.

This release is based on MySQL 8.0.12 and includes all the bug fixes in it. It is a Release Candidate quality release and it is not intended for production. If you want a high quality, Generally Available release, use the current Stable version (the most recent stable release at the time of writing in the 5.7 series is 5.7.23-23).

Percona provides completely open-source and free software.

Installation

As this is a release candidate, installation is performed by enabling the testing repository and installing the software via …