Oracle Message ORA-06108 - NETTCP: connect to host failed

ERRORNETTCP: connect to host failed
CAUSEConnection attempt to remote host has failed. Probably means that the SQL*Net TCP/IP server on the remote host is not up, or the host itself is not up (check the latter by targeting it with Telnet).
ACTIONStart the SQL*Net TCP/IP server process on the remote host.