Oracle Clusterware provides HA services to Real Application Clusters (RAC) databases and other applications. Oracle Clusterware makes applications highly available by monitoring the health of the applications, by restarting applications on failure, and by relocating applications to another cluster node when the currently used node fails or when the application can no longer run in the current node.
A cluster is a collection of two or more nodes where the nodes share a common pool of storage used by the Oracle Clusterware system files (the Oracle Cluster Registry [OCR] and the voting disk), a common network interconnect, and a common operating system.
Oracle Clusterware monitors all protected applications periodically, and based on the defined failover policy, it can restart them either on the same node or relocate them to another node, or it can decide to not restart them at all.
- Oracle Clusterware monitors all protected applications periodically.
- Based on the defined failover policy, Oracle Clusterware can restart failed applications on the same node or relocate them to another node.
- It can protect Oracle-based as well as non-Oracle-based applications.
A cluster is a collection of two or more nodes where the nodes share a common pool of storage used by the Oracle Clusterware system files (the Oracle Cluster Registry [OCR] and the voting disk), a common network interconnect, and a common operating system.
Oracle Clusterware monitors all protected applications periodically, and based on the defined failover policy, it can restart them either on the same node or relocate them to another node, or it can decide to not restart them at all.
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