I’ve been meaning to write an article on how to switch from CentOS to Oracle Linux for a while since Red Hat owned by IBM announced its new direction for CentOS, I’ve found myself with a bit of spare time over the weekend so finally got around to documenting the steps required to migrate from CentOS to Oracle Linux.

What is CentOS?

CentOS (Community Enterprise Operating System) was a Linux distribution that provided a free, community-supported computing platform functionally compatible with its upstream source, Red Hat Enterprise Linux in January 2014, CentOS announced the official joining with Red Hat while staying independent from…


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Are you a puppet master?

What is Vagrant?

Puppet Master with Vagrant, but what is Vagrant? Vagrant is an open-source software product by HashiCorp for building and maintaining portable virtual software development environments; e.g., for VirtualBox, KVM, Hyper-V, Docker containers, VMware, and AWS. It tries to simplify the software configuration management of virtualizations in order to increase development productivity.

Vagrant really comes into its own when you need something more than a Docker image. In simplistic terms, it provides you with a nice packaged “Vagrant” file to install a “Vagrant VM”. …


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What is Docker?

Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels. Because all of the containers share the services of a single operating system kernel, they use fewer resources than virtual machines.

I previously wrote these two blog posts ( here and here) about installing Oracle Database Docker Image as well as patching an Oracle Database Docker Image. …


Admission: I am not a vegan. I try to have a balanced diet of both meat and plant based meals, but I have no desire to cut animal produce from my diet completely.

The rise in popularity of plant based products has saw consumer consumption in the market rise at an unprecedented rate, looking at the Google search statistics searching for the work ‘veganism’ has increased a massive 590% in the last 5 years. And the Fast food chains have started to cotton on to this growing trend.

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We’ve had Greggs here in the UK launch with much success the…


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“Living the same week a few thousand times and calling it a life. I need to tell you that too many among us die at thirty and are buried at eighty.” — Robin S. Sharma

5am Club a book by Robin S. Sharma speaks about the benefits of waking up at 5am everyday before the rest of the world rises. The self help book takes the form of a story where 2 people meet a homeless man at a conference in New York, the homeless man turns out to be a world eccentric business mogul and billionaire Stone Riley. …


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Over that last few weeks I have begun listening to audiobooks at x2+ speed, after each book is completed I increase the speed by 0.5 to find my max digestion speed. As it stands my current speed is at x2.15, I still have no problem taking in the information or understanding what’s being said. I’ll admit when I first started at x2.0 speed it sounds a bit strange but after 10–15min my brain had adapted and was processing the information normally. But why I hear you ask?

Consuming information and media is a fundamental part of life, whether your listening…


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If you are reading this many of you like myself work in the Technology industry, even if you don’t, the tips here apply to all.

To many of you sleep will be difficult, this is understandable as most of us stare at a screen for 11+ hours per day be it at work, on phone/tablet or even during downtime periods I am playing computer games or diving into some of my programming side projects always infront of a screen. About 2 years ago I purchased an Oura ring [https://ouraring.com/] and have been tracking my sleep ever since, I have gone…


Over the last few years Amazon have made a number of public statements on how it no longer uses Oracle Database (whether you believe this is another story) and has made significant effort on the PR front into pulling customers away from using Oracle Database products.

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Oracle HQ

Oracles sales people have a concrete pitch where the offer all Oracle products for free(great)! as a business this sounds amazing when delivered during a glossed up sales presentation the catch is, Oracle auditors will come along and audit your Oracle product usage after 4 years and hit you with a bill to keep…

Andrew Pazikas

Database Administrator, Oracle Engineer, Tech Enthusiast & Crypto Mavrick

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