We receives lots of critical message as Metrics "Global Cache Average Current Get Time" is at 1.125
and Global Cache Average CR Get Time" is at 1.07843 by EM Oracle metric.
We have a 4 node 11.1 RAC in red hat. However, these two nodes that display Critical messages message does not support application---second nodes in failover mode.
I also do not see any user's session in these nodes by gv$session/v$session. I could not understand why these 'idle" node got Critical messages?