Error on dbSendQuery with RPostgreSQL and RJDBC on CentOS 6.5 and not Windows 7
This sounds like it may be related to the MTU of your network interface. Can you please try and adjust the MTU to 1500: Example Setting MTU on CentOS: ip link set dev eth0 mtu 1500 add MTU=1500 to the end of that /etc/sysconfig/network-scripts/ifcfg-eth0...