SAP JVM update in Oralce 11g RAC clustered environment

Hi All,

We are performing SAP JVM patch update in a clustered environment . We have 2 clustered DB nodes in oracle RAC clusterware and SCS instance is in the cluster. We are using SUM SP12 to update the JVM patch from4.1.0.37 to 57. We have reached downtime phase now and we need some clarifications and per-requisites that needs to be done for a cluster environment.Would like to know how to disable the autofailover of SCS instances in oracle RAC clusterware ??  how we can handle the maintenance mode in oracle RAC ?? is there are steps to disable auto failover and disable auto restart of SCS instance in other node ??

Kindly advise on this .

Thanks,

Utham