Backspace not working

On some of my systems, when I am in SQL*Plus, the backspace does not work. There must be a setting in the login environment, that affects this.
How can I fix this in the profile, without having to type in something everytime I log in ?
This is on Linux SLES9, running Oracle 10G.

What is the result of stty on the Linux becoming?
($ is prompt, do not type $, type only stty)
$ stty
speed 9600 baud; line = 0;
erase = ^H;
-brkint -imaxbel
or
$ stty
speed 9600 baud; line = 0;
erase = ^?;
-brkint -imaxbel
If it was the latter, please try this.
$ stty erase ^H
If this made your SQL*Plus correctly,
then please put it in login scripts on Linux for your convenience.
(ex .profile, .bash_profile, .login etc.)

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