I am running a 9204 RAC on a 2 node cluster.The second node instance is crashing with "ORA-00474: SMON process terminated with error"

I have put the event event="10046 trace name context forever,level 4" in the init of the second node and started the instance.Unfortunately the instance did not crash for a week.

I took out this parameter and restarted the instance and it crashed again with the ORA-00474.

I compared the init files of node 1 and node 2 and they are same.
This is urgent and need advice.