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Building a Secure VCN in OCI: A Complete Guide for Small Businesses

In this guide, I’ll take you through a deep technical walkthrough of building a Virtual Cloud Network (VCN) in Oracle Cloud Infrastructure. If you’re a small business owner, developer, or network engineer, this is the foundation of everything you will ever deploy in OCI. A poorly designed VCN creates ongoing problems—slow services, blocked traffic, security exposures, and troubleshooting nightmares. A well-designed VCN gives you speed, visibility, and a rock-solid security posture.

Install AI CLI tools

How to install gemini cli cloudclode chatgtp cli

Recover lost access to OCI server - lost passwrod for RSA key

When you lost your RSA key to server you need to find a way to recover that key. I was in this same place, here are my notes how to get to single user mode and get back control over your server

Connect to server using Console

Troubleshooting HeatWave — Common Issues, Causes & Fixes

Even though HeatWave is highly stable, DBAs occasionally encounter load failures, memory issues, or cluster instability. This article covers the most common HeatWave problems and how to fix them.

OCI Dynamic Routing Gateway Setup Step-by-Step for Hybrid Networking

The Dynamic Routing Gateway (DRG) is the heart of hybrid networking in OCI. If you're connecting an on-prem network, another cloud provider, or multiple VCNs — the DRG is the router that ties it all together. In this guide, I’ll show you exactly how to set it up, test it, and validate routing end-to-end.

Monitoring HeatWave — Complete Guide for DBAs & DevOps

he key to stable HeatWave clusters is proper monitoring. This article shows all the tools and metrics DBAs must track.

How to Secure Your OCI Always Free Tier Network: A Practical Guide

HeatWave Query Engine Internals — Joins, Aggregations, Hashing & Vectorization

HeatWave is designed for analytics at massive scale. Its performance comes from a combination of vectorized SQL operations, parallel execution, and distributed joins. Let’s explore the internals.

Understanding HeatWave In-Memory Storage — Compression, Encoding & Columnar Magic

HeatWave does not simply copy InnoDB tables into memory. It restructures them using columnar storage optimized for analytical workloads. This article explains exactly how that process works.