Oracle RAC · Published on 2026-07-02 · By Cluster Specialist

Oracle RAC 19c High Availability: Clusterware, ASM, and Node Eviction Troubleshooting

Deep dive into Real Application Clusters (RAC) 19c interconnect tuning, ASM disk group rebalancing, and handling node evictions under load.

In the context of modern enterprise systems, building and operating software that can sustain growth and evolution is a primary challenge. This article details our experience and recommended pathways in addressing design systems, engineering governance, and robust database setups.

Establishing Durable Foundations

When starting any large-scale modernization project, the first step is always aligning the architecture to business capabilities. This prevents the coupling of services that should remain autonomous and ensures that development velocities are not bottlenecked by shared library dependencies or monolithic database constraints.

We focus on domain boundaries, API contract testing, and CI/CD automation to verify that each team can deploy independently without breaking consumer workflows.

Key Takeaways

  • Clearly define domain and database ownership boundaries.
  • Design contracts-first APIs and test them automatically in isolation.
  • Harden release infrastructure with secure defaults, platform engineering templates, and strict audit logs.