If a hostname in an URI in monitor_uri_list is an unknown host, the agent logs a message stating that the connection attempt has timed out. Normally, a connection that times out will trigger a restart or failover of the application server. However, when the hostname is unknown, the connection will not initiate a restart or failover.
If the agent logs a message saying that a connection timed out but does not take any action, check to ensure that the hostnames in monitor_uri_list are correct.