Introduction of Flex ASM, ASM would run only on 3 instances on a cluster even if more than 3, the instances that not have an ASM would request remote ASM, typically like SCAN. In normal conditions in a node if ASM fails the entire node will be useless, where in 12c the ability to get the extent map from remote ASM instance makes the node useful.

Introduction of Flex Cluster, with light weight cluster stack, leaf node and traditional stack hub node, application layer is the typical example of leaf nodes where they don’t require any network heartbeat.

  • December 22, 2015 | 14 views