On 24/01/2013 18:19, Lu Jiang wrote: > Thanks Dimitre. > I just checked these virtual boxes, looks the public interfaces are > not resolved by DNS, they are only resolved by the host file. Could > this be the problem? > Hi Lu, I don't think so. Could you check the hosts file: localhost should resolve to 127.0.0.1, not to the address associated with the hostname. Please also try the following commands and post their output: ping localhost nslookup localhost Could you also post the hosts file on the node where root.sh fails (obfuscate IP addresses, names and aliases if necessary). Regards Dimitre -- //www.freelists.org/webpage/oracle-l