Check out my latest articles and insights on Medium (@dhirajengr) .

Upgrading Oracle Grid Infrastructure (GI) from 19c to 26ai (23c internally) is a critical task for RAC environments. While Oracle provides documentation, real-world execution often requires additional clarity. In this guide, I will walk through a complete step-by-step upgrade of a 2-node RAC cluster, using actual commands and logs from…
With the release of Oracle Database Appliance (ODA) software 19.26, Oracle introduced a brand-new utility: odaconfigcli. This tool is designed to make configuration collection and…
Introduction When I built my new desktop for Oracle RAC practice, I expected smooth sailing. Instead, I ran into persistent issues: high %irq, high %system…
Oracle Direct NFS (dNFS) is widely used for high-performance NFS I/O between Oracle databases and storage systems. When using Hybrid Columnar Compression (HCC) with dNFS…
ACFS tagging plays a crucial role in optimizing ACFS replication. Instead of duplicating an entire mount point tagging allows administrators to selectively replicate only specific…
I’m Dhiraj Kumar, an Oracle RAC Database With over 15 years of experience, I’m passionate about building high-performance, scalable database solutions that support critical business operations.
📘 Check out my latest articles and insights on Medium (@dhirajengr) .