Kellyn Gorman continues a series:
After my last blog post on Oracle Real Application Clusters (RAC) I was asked to talk about both health and how performance impact can affect a RAC database. Its architecture enables failover, workload distribution, and offers an option to scale performance, but only when all nodes play well together. When one node drags behind or becomes unstable, RAC has no choice but to protect the rest of the cluster- so help me, Oracle Gods. This protection can come in the form of node eviction, which can be both disruptive and at times avoidable with proactive monitoring and intervention.
Click through to learn how Oracle monitors node health, the types of issues you might run into, and how to prevent node eviction.