Schrödinger’s dNFS: The Empty Row Mystery

You will end up here: v$dnfs_servers returns no rows. You’ve checked everything. The library is linked. The alert log shows dNFS loaded. Your oranfstab is syntactically perfect. The NFS mounts are there. And you’re convinced it’s broken, I was too. I spent three hours proving dNFS was configured correctly while simultaneously proving it wasn’t working. […]

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Stress Testing Consolidated Platforms with Database Workloads

Your storage vendor claims 500K IOPS. Your server vendor promises 128 cores of “enterprise-grade performance.” Your hypervisor can “easily handle” 50 VMs. Your network fabric has “plenty of headroom.” Then you consolidate eight production databases onto the platform and everything falls over at 3 AM on a Tuesday. What happened? Nobody actually tested what happens

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