Dhiraj Kumar’s Oracle Blog: Insights, Best Practices and Real-World Solutions
Check out my latest articles and insights on Medium (@dhirajengr) .
● Featured BLOGS
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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…
● Latest BLOGS
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OPatchAuto Bootstrapping Failure with Error Code 255 and Resource Temporarily Unavailable
OPatchAuto execution fails during the bootstrap phase with error code 255.The failure prevents successful patching operations. Symptom Getting issue while running the Opatchauto on my…
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Multiple Database Services Are Not Constant Across the Scan Listeners In Two Nodes RAC
In a Real Application Cluster (RAC) setup, the SCAN listener running on Node 1 was able to register only the local instances, but failed to…
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Oracle Restart ASM Diskgroups Dismounted Automatically
Recently, we encountered a critical issue in one of our Oracle Restart environments (version 19.26 RU) where the SUNDNELLY database suddenly stopped working and all…
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Steps to Restore Oracle Grid Infrastructure (GI) Home on a Bad Node
Note: Modify the paths according to your environment. Ensure that permissions, ownership, and group settings match the good node for consistency. Step 1: Create a…
● About Me
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) .
Dhiraj Kumar's Blog 