Best Practice for monitoring RAC 11gR2

Hi,
I have RAC 11gR2+ASM on two nodes.
I would like to get your advice what are the most critical things i should monitor - Regarding RAC COMPONENCTS
Thanks

Hi,
here i am mentioning some basic monitoring
1)interconnect switch is working properly or not(private network)
2) check which instances are running on which nodes
3) check if ASM,listeners,nodeapps,gsd,vip..... are running or not.
Each instance carrying planned load (balanced?).
– Shared storage access is equal.
– Interconnect Load
-Latency
– High CPU usage - Oracle processes getting enough resources.?
Thanks

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