ORA-12203: TNS:unable to connect to destination
 *Cause: Invalid address specified or destination is not listening.
 This error can also occur because of underlying network or network
 transport problems.
 *Action: Verify that the net service name you entered was correct.
 Verify that the ADDRESS portion of the connect descriptor which
 corresponds to the net service name is correct.  Ensure that the
 destination process (for example the listener) is running at the
 remote node.

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
 *Cause:  The listener received a request to establish a connection to a
 database or other service. The connect descriptor received by the listener
 specified a service name for a service (usually a database service)
 that either has not yet dynamically registered with the listener or has
 not been statically configured for the listener.  This may be a temporary
 condition such as after the listener has started, but before the database
 instance has registered with the listener.
 *Action:
  - Wait a moment and try to connect a second time.
  - Check which services are currently known by the listener by executing:
    lsnrctl services <listener name>
  - Check that the SERVICE_NAME parameter in the connect descriptor of the
    net service name used specifies a service known by the listener.
  - If an easy connect naming connect identifier was used, check that
    the service name specified is a service known by the listener.
  - Check for an event in the listener.log file.