Oracle big datafile restore fails using Netbackup (ORA-19511, ORA-27190)
7/25/2012 3:27:50 PM - Error bpbrm(pid=1176) socket read failed, An existing connection was forcibly closed by the remote host.  (10054)


This shows that it is trying to read from a socket that has been closed. It's a networking problem. Ask your network administrator to raise the firewall connection timeout between the database host and the netbackup host.