FromDual GmbH

20/02/2026

FromDual delivers the new version 2.2.1 of its popular database performance monitoring solution for MariaDB, Galera Cluster, MySQL and PostgreSQL.

The FromDual Performance Monitor enables database and system administrators to monitor their databases and machines and receive notifications if something is not working as usual.

The FromDual Performance Monitor is freely available for testing purposes.

Further details can be found here: https://www.fromdual.com/blog/fromdual-performance-monitor-2.2.1-has-been-released/.

Image by edwardbrownca on Pixabay

18/02/2026

A newly forming independent community demands in an open letter from : ‘Let's talk about the future of .’

Anyone who wants to publicly support this letter is welcome to sign up here: https://letter.3306-db.org/

Further sources:

https://www.percona.com/blog/an-open-letter-to-oracle-lets-talk-about-mysqls-future/

https://www.theregister.com/2026/02/17/mysql_foundation_oracle_letter/

: Faithful pen open letter proposing independent foundation with or without Big Red's participation

11/02/2026

What is the quickest way to load data into the ?

We recently analysed this for / and and showed that the simplest method is not the fastest.

You can see more details and the results here: https://www.fromdual.com/blog/load-data-quick-into-the-database/

09/02/2026

In the tests in my previous articles, I found that completely ruined the concept of the dynamically configurable buffer pool!

And this within a long-term support release series. To prevent this from affecting your production environment, I have described more about this here:

https://www.fromdual.com/blog/mariadb-dynamically-configurable-buffer-pool-broken/

Image Author: Cplakidas, GNU FDL v1.2

09/02/2026

How much space does NULL need?

I was recently asked this by a customer. In this article we describe how much space NULL really uses with , and ...

FromDual is a Neutral and Vendor independent service company for MariaDB, MySQL and Galera Cluster providing Consulting, Training, remote-DBA and Support Services for MariaDB and MySQL.

08/02/2026

Someone is deleting my shared memory segments!

With under myEnv we regularly get shared memory segment errors:

psql: error: connection to server on socket "/tmp/.s.PGSQL.5433" failed:
FATAL: could not open shared memory segment "/PostgreSQL.4220847662":

I have described why this happens here:

https://www.fromdual.com/blog/deleted-postgresql-shared-memory-segments/

07/02/2026

Load CSV files into the database

Proof of concept how to load data from a CSV file into a / or database to display locations on an map with .

https://www.fromdual.com/blog/load-csv-files-into-the-database/

04/02/2026

At least some of the senior experts have identified the weak spots: "What's Missing in Postgres?" by Bruce Momjian:https://momjian.us/main/writings/pgsql/missing.pdf
That is a good starting point for improvement.
IMHO their outdated MVCC implementation is still missing from this presentation. And index clustered tables are really cool!

26/01/2026

Next Sunday is again (the 2nd?)! What's planned? For those who are not at ?

Details: https://di.day/

Unser digitales Leben befindet sich in der Hand weniger Überreicher. Mit der Monopolstellung ihrer Unternehmen bestimmen Menschen wie Elon Musk, Jeff Bezos oder Mark Zuckerberg weltweit, wie wir uns online informieren, wie wir diskutieren, kommunizieren oder handeln. Einen solchen unkontrollierten ...

30/11/2025

Attribute promotion and demotion in the MariaDB Galera Cluster

Here is my experience report on the attribute promotion and demotion feature in the latest 11.8.5 Cluster...

In MariaDB master/slave replication there is a feature called attribute promotion/demotion. Simply put, it is about how the slave behaves or should behave if the master and slave have different column definitions or even a different number of columns or a different sequence of columns. Use case of t...

23/10/2025

FromDual Backup and Recovery Manager for MariaDB and MySQL 2.3.2 has been released

What is new: Mainly SSL/TLS encryption and MySQL 8.4 support.

Download: https://support.fromdual.com/admin/public/download.php or from our repository: https://www.fromdual.com/repositories

Overview FromDual provides software repositories for their MariaDB/MySQL related software: DEB Repository for Debian and Ubuntu RPM Repository for Redhat, Oracle Linux, Rocky Linux, AlmaLinux, CentOS and Fedora RPM Repository for SLES and OpenSuSE DEB Repository for Debian and Ubuntu For Debian and....

07/03/2025

MariaDB Honeypot

We recently set up a MariaDB honeypot to see what was going on: Our data was partially downloaded, then deleted and an instruction to transfer a ransom in Bitcoins was deposited. You can read exactly how the attackers proceeded here: https://fromdual.com/mariadb-honeypot-en

That smells like more! Let's see what falls into the trap next time...