When using Xshell to connect to the Linux server, switch to the Sqlplus console, when using the return, the ^h symbol appears, it seems that the return can not be used! Solution:
1) $ stty erase ^h: The setting associated with the BACKSPACE key is erase, which represents the deletion of the last character.
If the current window is executed, only the current window is valid, the next time you log in will need to be reset, you can write this command to the shell configuration file, such as ~/.BASHRC, so that each time can take effect.
2) Use the DELETE key instead of the BACKSPACE key,
3) Use CTRL + BACKSPACE key
4) Execute the command stty erase ^h Modify the terminal line settings. Note Using this command to modify, the original use of the DELETE key and CTRL + BACKSPACE key deletion will be invalidated (will show ^!) in addition to the web has a rlwrap gadget, it can not only handle the backspace bar, but also handle the direction key.
Download from here: http://utopia.knoware.nl/~hlub/uck/rlwrap/
Xshell when you switch to Oracle's sqlplus console when connecting to a Linux server, you cannot use the ENTER key solution!