Oracle DBA playbooks & tutorials

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From the DBNexus blog

Browse by topic, or scroll through the latest hands-on guides. Every article is grounded in production Oracle DBA work — no theory dumps, just what you actually run on the job.

All topics Oracle 26ai / AI Oracle RAC Data Guard Backup & Recovery Performance Patching & Upgrade GoldenGate OEM Exadata Oracle 19c Security Interview questions & answers Career & Training Oracle DBA

Oracle DBA playbooks & tutorials

From the DBNexus blog

1Z0-183 Study Guide: Oracle AI Database Administration Professional

Install Oracle 26ai Free on Windows 11: Installer or Docker (2026)

Oracle 26ai DBA Interview Questions: 25 Real Scenarios (2026)

How to Read an Oracle AWR Report: The 10-Step Method to Find the Bottleneck (19c to 26ai)

The 2 AM Oracle DBA Toolkit: 25 Queries to Save Before Production Breaks (19c to 26ai)

OEM 24ai Agent Unreachable / Metric Collection Error: 12 Real Fixes

Oracle Data Guard Interview Questions: 20 Real Scenarios With Commands

July 2026 Oracle RU Patch Numbers Every DBA Must Know (19c / 21c / 23ai → 26ai)

Oracle Backup and Recovery Interview Questions: 20 Scenarios

OEM 24ai: Add Targets and Build Your First Dashboard

Oracle RAC Interview Questions: 25 Scenarios With Answers

Data Guard Switchover vs Failover: When to Use Which

ORA-00060 Deadlock — Read the Oracle Trace File Like a Senior DBA

Configure Fast-Start Failover in Oracle 19c & 26ai Data Guard — Hands-On DGMGRL Lab (2026)

Fix a Full Tablespace in Oracle 19c & 26ai — 5-Minute DBA Playbook (2026)

Oracle 23ai AI Vector Search — Build Your First Vector Index in 15 Minutes (2026)

Install Oracle Enterprise Manager 24ai on Oracle Linux 9 — Step-by-Step DBA Lab in 60 Minutes (2026)

Add a Node to Oracle 19c RAC Using addnode.sh — Step-by-Step Lab in 30 Minutes (2026)

srvctl Cheat Sheet for Oracle 19c & 26ai RAC — 30 Production Commands Every DBA Must Know (2026)

Oracle GoldenGate 23ai Microservices Setup on Linux — Step-by-Step Production Lab (May 2026)

April 2026 Oracle RU Patch Numbers Every DBA Must Know (19c / 21c / 23ai → 26ai)

Recover a Dropped Table in Oracle 19c & 26ai — RMAN Table-Level PITR Lab in 20 Minutes (2026)

Exadata Smart Scan Explained: How Cell Offload Cuts Database I/O by 90% on X11M (2026 Deep Dive)

Kill Blocking Sessions in Oracle 19c & 23ai/26ai — The 60-Second DBA Playbook (with MAX_IDLE_BLOCKER_TIME)

Oracle 19c Data Guard Switchover Using DGMGRL — Step-by-Step Lab in 10 Minutes (2026)

Oracle AI Database 26ai On-Premises: What DBAs Need to Know About the May 2026 Linux x86-64 Release

Oracle 19c Non-CDB to 26ai PDB Upgrade Using AutoUpgrade — Step-by-Step Lab (Same Host)

Oracle DBA Career Growth Guide 2026 — Skills, Salary & Enterprise Learning Path

Advance Your Career as an Oracle DBA - Embrace Cloud Technologies

DBNexus: Your Partner in Database Excellence

Oracle AI Database 26ai: Top 5 Features Every DBA Must Know in 2026

Oracle 26ai vs 19c: What Changed and Why It Matters for DBAs

How to Explain RAC Node Eviction in a Client Interview – A Complete Guide for DBAs

Master RAC DBA Performance Tuning: Advanced Skills

Automate RAC DBA Patching-Master Cluster Updates

Oracle 26ai Features Deep Dive: Master New Tools

RAC DBA Skills-Master Cloud Migration Now

January 2026 Oracle Patch Update Unveiled Key Changes Every DBA Should Know

Oracle 26ai Installation on Oracle Linux 9 Using GUI and DBCA

Oracle AI Database 26ai (23.26.1) Now Available for Linux x86-64

Mastering Oracle Data Pump Guide for Efficiency

Understanding the Differences Between Oracle RAC SCAN Listener and LOCAL_LISTENER

Mastering Oracle DBA Interviews: Top 20 Scenario-Based Questions and Answers for Experienced Candidates

Exploring the Features and Benefits of Oracle Exadata X11M

Why the Oracle DBA Role Remains a Top Choice in Today's Job Market

Oracle RAC on OCI vs On-Premises: Architecture, Performance, Cost & HA Explained

Comprehensive Guide to Oracle DBA Educational Programs

Master High-Availability Databases with Oracle RAC

October 2025 Oracle RU Patch Numbers Every DBA Must Know (19c / 21c / 23ai → 26ai)

Real-World Oracle Production Debugging: A Step-by-Step Playbook for DBAs

Mastering Oracle DBA Skills for Success

Enhancing Your Career with Oracle DBA Skills

Oracle Enterprise Manager 24ai Installation Guide (2025) – Step-by-Step Tutorial for DBAs

How to Install Oracle Database 23ai on Windows Server: A Step-by-Step Tutorial

Initial Load Extraction in Oracle GoldenGate 21.3 Microservices

Oracle GoldenGate Microservices Hub Setup on RAC – Step-by-Step Guide

Top 10 Advanced Oracle DBA Interview Questions and Expert Answers

🚨 Oracle 19c Extended Support Update & Exciting Training Announcement 🚨

Oracle RAC Training: Master Oracle 19c RAC with Expert-Led Course

Oracle 19c RAC Installation on Linux 9.4 - The Ultimate Step-by-Step Guide

Mastering Oracle Data Pump (expdp, impdp) in Oracle Database!

🚀Create Your OCI Account: Unlock the Power of Oracle Cloud Infrastructure (OCI)🚀

Oracle Critical Patch Update Advisory - July 2024: Essential Information and Action Steps

Oracle Enterprise Manager Cloud Control 13c Installation Guide || OEM 13.5 Installation Step-By-Step

Oracle 19c RAC Installation on Linux: Step by Step Guide

How to Perform RMAN Duplicate from Active Database: Detailed Tutorial

Unlocking the Secrets of Oracle Database: A Comprehensive Oracle DBA Interview Guide Questions/Answers

"How Can Cloud Computing Impact Database Administration? A Guide for DBAs" - Day 1

Explore Oracle Database 23ai || First Look and Installation on VirtualBox (Step-by-Step Guide)

Install Oracle 19c on Linux 9.3 ( Complete Guide - 2024 ) || Oracle Database Tutorial

#InterviewPrep Oracle DBA interview preparation (Interview Questions & Answers): Day 3

Expanding Oracle RAC's Capabilities: Adding a New Network Interface || HAIP Oracle RAC

#InterviewPrep Oracle DBA interview preparation (Interview Questions & Answers): Day 2

#InterviewPrep Oracle DBA interview preparation (Interview Questions & Answers): Day 1

Maximizing Oracle Database Performance: A Guide to Parameter Tuning

Oracle Database Upgrades with AutoUpgrade Feature - Oracle 19c Database Upgrade

How to Configure TDE Auto Login Wallet in Oracle 19c

How to identify top fragmented tables in Oracle Database