Session Catalog for Oracle OpenWorld & CodeOne 2018 in JSON files

Lucas Jellema

The Oracle OpenWorld and CodeOne 2018 conferences took place in the last week of October 2018. Together, over 1500 sessions took place. The session catalog with details for all sessions is accessible at https://events.rainfocus.com/widget/oracle/oow18/catalogcodeone18 – at least at the time of writing. The session information includes title and abstract, track, […]

Internet Intelligence – Checking on the accessibility of your web application from Anywhere in the world – for free with Oracle Cloud Infrastructure

Lucas Jellema

A valuable capability that organizations using Oracle Cloud Infrastructure have available is internet intelligence. This capability allows you to monitor the health and accessibility of your web site’s  or web application’s host – from over 30 locations across the world. You enter the IP address of the host and the […]

CQRS through Twitter – more fun than meaning

Lucas Jellema

As part of my 50 Shades of Data presentation, I talk about CQRS – Command Query Responsibility Segregation. The idea that you can have one or more read only data stores with data replicated from the master store where all data manipulation (commands) take place. In a different presentation, I […]

Getting Started on Monitoring with Prometheus and Grafana

Lucas Jellema

Monitoring sounds like a terribly useful thing to do. And in many situations it is of course. However, rather than starting our discussion with monitoring, we really should start from the reasons for considering monitoring. With regard to IT, we typically are faced with non-functional requirements regarding business applications. The […]

Generic Docker container image for running and dynamically reloading an Oracle JET application from a Git repository

Lucas Jellema

This article introduces a Docker Container Image that runs an Oracle JET application from a Git repository and is capable of dynamic reload of that application when the repository contents get updated. The container image sources are on GitHub in repository https://github.com/lucasjellema/docker-oracle-jet-run-live-reload. It has been pushed to Docker Hub as […]

June 23 2019, date of the SCN-bug

Job Oprel

The what? I read about the SCN bug a few years ago (a wildly increasing value of the SCN till a certain limit has been reached ) , and took this for granted – most of it. Until recently a customer asked for help with a 9.2 database which had to […]

First Steps with Prometheus and Grafana on Kubernetes on Windows

Lucas Jellema 1

Preparation: before I started with Prometheus, I installed VirtualBox, Minikube with Tiller on my Windows 10 laptop – as described in this article: https://technology.amis.nl/2018/08/13/running-kubernetes-1-10-using-minikube-on-windows-10-adding-kubectl-and-helm-tiller/. I then increased the Base Memory setting for the minikube vm to 8192 MB (the default 2048 MB is not sufficient) After making this change – […]

Running Kubernetes 1.10 using MiniKube on Windows 10 (adding kubectl and helm/tiller)

Lucas Jellema 1

Some quick steps to get Minikube for K8S 1.10 up and running on Windows 10 (presuming VirtualBox has already been installed) Download kubectl binary from: https://storage.googleapis.com/kubernetes-release/release/v1.11.0/bin/windows/amd64/kubectl.exe  Copy kubectl.exe to any directory of your liking; add that directory to the PATH environment variable. Download minikube from https://github.com/kubernetes/minikube/releases  Download the minikube-windows-amd64.exe file, […]

Another Taste of India– ODevCYatra 2018

Lucas Jellema

July 2018 saw another edition of the Oracle Developers’ tour through India, called Yatra. In just over two weeks, seven cities participated in this tour – with each city hosting a one day mini-conference (three of four parallel tracks). Organized by many volunteers from the local chapters of the All […]