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Latest — 16 Apr 2026

Oracle: prevent Active DataGuard from being used

Using a standby database is a good way to increase availability and redundancy to an Oracle database. Switching over the database to another host and/or data center also helps to decrease outages for patching. Best practise for a database installation is to always have Grid Infrastructure (GI) installed. Sure

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Flashback: Palm m100

The Palm m100 was one of my first handheld devices. This is what I did with it...

Oracle: Install ASR on SuSE Linux

Installing Oracle ASR on SuSE Linux 15 isn't as straight forward as doing the same on Oracle Linux. Here is how to get it done...

Oracle: prevent password from aging on Exatada

When deploying an Oracle Exadata, passwords will be valid only for 60 days. After that time period, you will have to set a new password. But that's not very comfortable - and it will prevent your monitoring systems from logging in. I'll show you how to disable password aging on Exadata.

Oracle: change Oracle home name

Are you annoyed by randomly created Oracle Home names? Here's how to change them to something more informative!

Oracle: Access MySQL databases from Oracle

I'll show how to access MySQL databases from Oracle

Oracle: Access PostgreSQL from Oracle

I'll show how to access PostgreSQL databases from Oracle

PostgreSQL: Upgrade to version 18 in-place

This is how I update my PostgreSQL instances to 18 using Docker Compose and PgAutoUpgrade

Valkey: Set up replication for Valkey

Some time ago, I wrote about Valkey as an alternative for Redis (see here). And in fact, many companies are using it in production. But installing Valkey in Docker or on a server isn't enough, as there should be any mechanism for high availability. So I'll

Tmux: lower your stress level at work (or maybe also at home) using Tmux

In my job, I have to connect to many different servers. Fortunately, most of them are running Linux. So I connect to them, do whatever I have to do, and close the connection. But sometimes, a terminal window isn't enough, because * I'd like to see what