Oracle Clusterware is a software component provided by Oracle Corporation that enables the management and coordination of multiple servers in a cluster environment. It provides high availability and scalability for Oracle databases and other applications by allowing multiple servers to work together as a single system. Oracle Clusterware handles tasks such as node membership, resource management, and failure detection and recovery within the cluster.
Continue reading “crsctl Commands Cheat Sheet”How to Fix Oracle RAC Resource Unknown State
Quite often you can get Oracle RAC resources in an unknown state and this is quite annoying because you won’t be able to use srvctl to manage that resource, to start and stop them.
There is a way to fix it and I’m going to show you how I solved that in a 2 node Exadata RAC.
Let’s first check a resource that is in an unknow state:
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