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Technical Blog
Practical Oracle Cloud, Linux, Exadata and virtualisation guides based on real-world infrastructure experience.
Exadata
Configuring Active-Backup Bonding (Mode 1) for OLVM
Applies to: Oracle Linux 8 / 9, OLVM 4.x, mixed 10 Gb / 25 Gb networksOverviewWhen LACP introduces instability, particularly with some 25 Gb optics or mixed vendor switches Active-Backup (mode 1) bonding provides a simpler and more reliable alternative.Only one NIC is active a...
Exadata
Setting Up LACP Bonding (Mode 4) for Oracle Linux Virtualisation Manager (OLVM)
Applies to: Oracle Linux 8 / 9, OLVM 4.x, Cisco Nexus or MLAG-capable switchesOverviewIn an OLVM environment, Link Aggregation Control Protocol (LACP) bonding enables multiple NICs to act as a single high-performance link.This provides bandwidth aggregation and fault tolerance...
Exadata
Building a “Naughty or Nice” Dashboard for My Kids With Zero Dev Experience
If you’ve ever lived with young kids in December, you know exactly what our house turns into two tiny Tasmanian devils counting down to Christmas Eve.Last year, my wife and I were exhausted constantly reminding them to behave so Santa will still visit. It felt like a losing ba...
Exadata
Oracle Linux Basic Administration Series - Part 1 - How to Install Oracle Linux Step-by-Step
Oracle Linux is a enterprise-grade operating system based on Red Hat Enterprise Linux (RHEL). It’s free to download and use, and it’s optimized for Oracle products — but you can use it for any Linux server or lab setup.In this blog, we’ll go through how to install Oracle Linux...
Exadata
Oracle Linux Basic Administration Series - Part 2 - How to Manage Software Packages with DNF (YUM)
After installing Oracle Linux, one of the first things every system administrator needs to learn is how to manage software packages — installing, updating, and removing applications.Oracle Linux uses the DNF package manager (an improved version of YUM). It handles dependencies...
Exadata
Oracle Linux Basic Administration Series - Part 3 - How to Configure Network Settings in Oracle Linux
Network configuration is a fundamental part of Linux administration. Whether you’re managing a server or a virtual machine, you’ll often need to assign IP addresses, configure DNS, and manage connections.In Oracle Linux, you can manage networks using: • NetworkManager command-...
Exadata
Oracle Linux Basic Administration Series - Part 4 - How to Manage Users and Groups in Oracle Linux
User and group management is one of the most important skills for any Linux system administrator.It’s essential for controlling who can access the system, what permissions they have, and how they interact with files and services.In this blog, we’ll cover how to create, modify,...
Exadata
Oracle Linux Basic Administration Series - Part 5 - How to Manage File Permissions and Ownership in Oracle Lin
File permissions and ownership are at the heart of Linux security and system management. Every file and directory in Oracle Linux has a set of permissions and ownership attributes that determine who can read, write, or execute it.In this blog, you’ll learn how to: • View and u...
Exadata
Oracle Linux Basic Administration Series - Part 6 - How to Manage Services Using systemctl in Oracle Linux
Modern Oracle Linux systems use systemd as their default system and service manager. The systemctl command is your main tool to control services - starting, stopping, enabling, and checking their status.In this blog, you’ll learn how to use systemctl effectively to manage serv...
Exadata
Oracle Linux Basic Administration Series - Part 7 - How to Monitor System Performance in Oracle Linux
Monitoring system performance is one of the key responsibilities of a Linux administrator.It helps you understand how your server is performing, detect bottlenecks, and troubleshoot issues before they become serious problems.In this blog, you’ll learn how to use essential comm...
Exadata
Oracle Linux Basic Administration Series - Part 8 - How to Manage Disk Partitions and File Systems in Oracle L
Every Linux system administrator must know how to manage disks — from creating partitions to formatting and mounting file systems.In Oracle Linux, these tasks are commonly done using tools like lsblk, fdisk, parted, and mkfs.In this blog, we’ll walk through how to: • Identify ...
Exadata
Oracle Linux Basic Administration Series - Part 9 - How to Manage Logical Volume Management (LVM) in Oracle Li
Logical Volume Management (LVM) gives you flexibility and control over disk storage.Instead of being locked into fixed partitions, LVM lets you resize, extend, or combine storage dynamically which is perfect for growing environments or virtualized systems.In this blog, you’ll ...
Exadata
Oracle Linux Basic Administration Series - Part 10 - How to Schedule Tasks with Cron and Systemd Timers in Ora
IntroductionAutomation saves time and reduces human error. In Oracle Linux, you can schedule repetitive tasks like backups, log cleanup, or updates using cron or systemd timers.In this blog, you’ll learn how to: • Schedule jobs using cron • Use at for one-time tasks • Create a...
Exadata
Oracle Linux Basic Administration Series - Part 11 - How to Configure and Secure SSH Access in Oracle Linux
IntroductionSSH is the most common method to access and manage Linux servers remotely.It allows encrypted communication between your local system and the Oracle Linux server, making it both powerful and secure - if configured correctly.In this blog, you’ll learn how to: • Inst...
Exadata
Oracle Linux Basic Administration Series - Part 12 - How to Configure the Firewall Using firewalld in Oracle L
A firewall protects your Oracle Linux server from unauthorized access.firewalld is a flexible firewall tool built on iptables/nftables.It uses zones and services to define different trust levels.In this blog, you’ll learn to:• Check and start firewalld• Allow or block services...
Exadata
Oracle Linux Basic Administration Series - Part 13 - How to Set Up and Manage SELinux for Security in Oracle L
SELinux is an additional security layer built into Oracle Linux.It enforces access control policies that limit what processes can do, even if an attacker gains access to your system.While firewalld controls network access, SELinux controls system-level access between users, fi...
Exadata
Oracle Linux Basic Administration Series - Part 14 - How to Manage System Logs with journalctl and rsyslog in
Logs are your system’s black box.they record everything that happens under the hood: service activity, authentication, kernel messages, and more.Oracle Linux uses two main logging systems: • systemd-journald – modern binary log manager used with journalctl • rsyslog – traditio...
Exadata
Oracle Linux Basic Administration Series - Part 15 - How to Update and Patch Oracle Linux Safely
Keeping your Oracle Linux system up to date is essential for security, stability, and performance.Regular updates fix vulnerabilities, improve compatibility, and ensure your server runs smoothly.In this blog, you’ll learn how to: • Check for and install updates using dnf • Man...
Exadata
Technical Deep Dive: Adding X10 Storage Cells to an Existing Oracle Exadata Environment
ObjectiveThis post details the end-to-end process of expanding an existing Oracle Exadata environment by integrating two additional X10 storage cells. The steps include validating system compatibility, creating grid disks, integrating with Oracle ASM, and verifying post-implem...
Exadata
How to Upgrade Oracle Linux 7.9 to 8.10 in OCI Using Leapp
Looking to upgrade your Oracle Linux 7.9 system in Oracle Cloud Infrastructure (OCI) to 8.10 without having to start from scratch?You can use the Leapp utility to do an in-place upgrade, preserving your existing configurations, data, and settings. This guide walks you through ...
Exadata
OpenVPN CloudConnexa with Oracle Cloud
Overview of OpenVPN CloudConnexa OpenVPN CloudConnexa is a cloud-based VPN service that enables you to implement scalable and secure network access within your cloud environment. Some of the key benefits of implementing OpenVPN CloudConnexa are below, • OpenVPN is a managed se...
Exadata
Recovery boot of a DBaaS Instance after a root filesystem file corruption
Author: Jason BeattieLog into console1. Navigate to Oracle base database service2. locate the relevant Instance.3. Select Console Connection4. Create Console Connetion-generate keys.5. Copy the SSH String.Open cloud Shell1. Create the private key within cloud shell.2. Paste th...
Exadata
Part 4: Creating a Load Balancer and Assigning a Certificate to the Listener in OCI
This final part of the series details how to create a load balancer in Oracle Cloud Infrastructure (OCI) and secure it by assigning an SSL certificate to its listener. This ensures secure and efficient traffic distribution for applications.Step 1: Access the Load Balancer Serv...
Exadata
Part 3: How to Create a Certificate Authority (CA) and Certificates in OCI
Author: Jason BeattieIn this section, we’ll walk through the steps to create a Certificate Authority (CA) and generate certificates in Oracle Cloud Infrastructure (OCI). These certificates will later be used to configure a Load Balancer, which we’ll cover in Part 4.Step 1: Set...
Exadata
Part 2: Creating Dynamic groups, Policies for vault access from Certificates and CA's
Author: Jason BeattieIn this part of the blog, we will walk through the creation of policies, dynamic groups, a Certificate Authority (CA), and certificates in Oracle Cloud Infrastructure (OCI). Follow these steps:Follow the bellows steps. We will first create the Dynamic grou...
Exadata
Part 1: Introduction to Building a Web Server in OCI
Author: Jason BeattieIn this series, we will cover the process of creating a secure web server and enabling access through a load balancer, utilizing a self-signed certificate. The steps we will explore include: • Creating a Vault and Managed Encryption Key (MEK): Setting up s...
Exadata
Part 2: Cloning Block Volumes Between Two Tenancies in Oracle Cloud Infrastructure (OCI)
Author: Jason BeattieOverviewSimilar to boot volumes, block volumes can also be cloned between tenancies. This part focuses on setting up and cloning block volumes across the same region using OCI CLI.Steps to Clone a Block VolumeFollow Steps 1-4 from Part 1 to configure polic...
Exadata
Part 1: Cloning Boot Volumes Between Two Tenancies in Oracle Cloud Infrastructure (OCI)
Author: Jason BeattieOverviewCloning a boot volume between two tenancies in OCI requires careful setup and planning. This blog outlines the prerequisites, policies, and steps to successfully clone a boot volume from a source tenancy to a target tenancy in the same region.Prere...
Exadata
A Fresh Look at OCI: Exploring the New Oracle Cloud Interface and User Experience
Author: Jason BeattieIntroductionOracle Cloud Infrastructure (OCI) has recently unveiled an updated user interface, giving the platform a refreshed look and feel. For both seasoned cloud architects and new users, the modernized layout improves navigation, usability, and effici...
Exadata
Setting Up OCI CLI on Windows and Mac: Step-by-Step Guide
Author: Jason BeattieOracle Cloud Infrastructure (OCI) CLI (Command Line Interface) is an essential tool for developers and administrators looking to interact with Oracle Cloud services via terminal commands. This tool simplifies managing cloud resources, automates tasks, and ...
Exadata
OCI Networking Explained
Author: Jason BeattieOverviewIn this blog, we’ll introduce the key virtual networking components within Oracle Cloud Infrastructure (OCI). Understanding these components is critical when building a robust cloud environment. We will explore Virtual Cloud Network (VCN) resources...
Exadata
How to Implement Transit Routing with a DRG Deployment in a Hub & Spoke Architecture
Transit routing in Oracle Cloud Infrastructure (OCI) using Dynamic Routing Gateways (DRGs), involves setting up a network architecture that enables communication between different virtual cloud networks (VCNs) or between on-premises networks and VCNs. DRGs are used to facilita...
Exadata
Workload Profiles in Oracle Cloud Infrastructure (OCI)
Author: Jason BeattieIn the rapidly evolving landscape of cloud computing, cost efficiency is now a paramount consideration. OCI provides a robust platform for hosting Oracle workloads in the cloud, and in this blog post, we will delve into the concept of workload profiles. Un...
Exadata
OEDA - The Tool to Use to Start your On-Premise Exadata Journey
Author: Jason BeattieThe Oracle Exadata Deployment Assistant (OEDA) tool serves the purpose of initializing the configuration of the Oracle Exadata Database Machine.Here's a step-by-step guide:Downloading OEDA:Obtain OEDA from the Oracle Technology Network (OTN). Ensure to dow...
Exadata
OLVM - The Hypervisor Bringing Oracle Into The New Age
Author: Jason BeattieAs of 31st March 2021, Premier Support for OVM has ended.To replace it, Oracle has now released the new KVM-based platform, Oracle Linux Virtual Manager (OLVM). As you can see in the image below, Oracle has really improved the user interface (UI) on the ne...
Exadata
OpenVPN Configuration within Oracle Cloud
Author: Jason BeattieWe found issues when trying to configure openvpn within a private subnet. Whilst connecting over a public load balancer and connecting to the OpenVPN Client.Here's how we solved it. Architecture Overview:As you can see from the below image we created:1. A ...
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