ORA-3136
Issue: Inbound connection timed out (ORA-3136) In 10gR2, SQLNET.INBOUND_CONNECT_TIMEOUT the parameters were set to have a default of 60 (seconds). Set the parameters SQLNET.INBOUND_CONNECT_TIMEOUT and INBOUND_CONNECT_TIMEOUT_listenername to 0 (indefinite). What the error is telling you is that a connection attempt was made, but the session authentication was not provided before SQLNET.INBOUND_CONNECT_TIMEOUT seconds. As far as…