CRS: Oracle Cluster Ready Service(Oracle集群就绪服务)
OCR: Oracle Cluster Registry(Oracle集群注册表)
ONS: Oracle Notification Services(Oracle通知服务)
VIP: virtual IP(虚拟IP地址)
GSD: Global Service Daemon(全局服务守护程序)
ASM: Automatic Storage Management(自动存储管理)
GRD: Global resource directory
GCS: Global Cache Service
GES: Global Enqueue Service