You could try piping it through ssh, I don't know how that would effect the speed though.
tar -cf - /u02/databases/mydb/data_file-1.dbf | pigz | ssh user@destination "pigz -d | tar xf - -C /"
tar -cf - /u02/databases/mydb/data_file-1.dbf | pigz | ssh user@destination "pigz -d | tar xf - -C /"
All those solutions ( from the OP ) are faster, but you will need some setup, before you could use it from one host remotely and in the end you might end up using good old SMB or NFS which will give you speed ( http://www.linuxquestions.org/questions/linux-networking-3/s... )