CheckMk: Upgrade CheckMk using Docker Compose
This is about how to update or upgrade CheckMk inside a Docker container.
Topic
Upgrade
A collection of 5 issues
Oracle: Which updates to install
In my IT carreer, I often come to new customers I didn't know before. So I don't know their infrastructure.
As I'm a DBA, I'm not interested in application servers (besides telling the customer that Operating Systems and standard applications should always
Oracle: Upgrade from 12.1.0.1 using autoupgrade.jar takes ages
Last year, when I upgraded many Oracle databases to 19c, I had a few databases which were still on Oracle 12.1.0.1. In case that you forgot what 12.1.0.1 meant for Oracle and all customers:
* Until 12.1.0.1, we had Enterprise Edition, Standard
Oracle: Timezone upgrade - the easy way
From time to time, countries change their time zone, or the daylight saving time changes (in Germany, we wait for that since years).
As some date columns include this information - like TIMESTAMP WITH TIME ZONE, they have to be updated. These updates are called Timezone upgrades.
The standard way
PostgreSQL: inplace upgrade in Docker container
As I wrote in a older blog entry, we cannot just change the PostgreSQL image of a Docker container to a higher major version. Restarting the container like that will lead to a not running PostgreSQL container, as older data will not start using newer binaries.
But there's