Give more information regarding architecture and logs
Please share the current architecture of your Instance and logs as per Pravin so that Group can provide some solution on this.
currently appstier is runing on node1 and node2. after cloning appstier on node1 , later on node2 added to appstier in purpose of fail over if node 1 went down or if some service/process got stuck in node1 . but now we found that if oacore_server1 which is running on node1 got stuck for some reason or manually we shut it down . that time apps also become unavailable from node1. Please let me know which logs you require.