when using putty SSH to linux server, the vi syntax color is always make me to difficult to see them clearly no matter how I try to change to backgroud putty color , as shown above.Thanks to the following two URL.
Enabling vi syntax colors
Turn on or off color syntax highlighting in vi or vim
The solution to me is to create .vimrc file in one's home directory.
orarac1poc:DG:/home/oracle> cat .vimrc
syntax off
or inside vi, type command ":syntax off"
