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Latest — 18 Apr 2026

Flashback: Compaq/HP iPAQ

Many years ago, before Smartphones were available and affordable, I needed to have something electronical to manage my calendar and appointments. One of these devices was an HP/Compaq iPAQ 3630 - the one with the lowest specs in the 3600 family: * 206 MHz Intel StrongARM * 32 MB RAM * Slot

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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

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