oracle rac的网卡必须要支持多播

If multicast based communication is not enabled as required either on the nodes of the cluster or on the network switches used for the private interconnect, the, which is called as part of a fresh installation of Oracle Grid Infrastructure, or the (called as part of an upgrade to Oracle Grid Infrastructure will only succeed on the first node of the cluster, but will fail on subsequent nodes with the symptoms shown below:

CRS-4402: The CSS daemon was started in exclusive mode but found an active CSS daemon on node , number 1, and is terminating
An active cluster was found during exclusive startup, restarting to join the cluster
Failed to start Oracle Clusterware stack
Failed to start Cluster Synchorinisation Service in clustered mode at /u01/app/crs/ line 1016.
/u01/app/crs/ -I/u01/app/crs/ -I/u01/app/crs/ /u01/app/crs/ execution failed


perl -n <node1>,<node2>,<node_n...> -i <interface1>,<interface2><interface_n...>
例:perl -n ora11gdb1,ora11gdb2 -i eth1,eth2

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