Oracle internals, debugging and undocumented features
If you are running sqlplus or RMAN on Windows than you can use upper arrow to get history.What about linux?
1) Install readline wrapper:
yum install rlwrap
2) Change .bashrc and make alias :
alias sqlplus=’rlwrap sqlplus’ alias rman=’rlwrap rman’
The other option is to install qqlplus which you can find on the link
I tried it on my Oracle 11 running Linux 64bit and did not work.I used already made executable under Linux folder ( included into compressed source file ) but I am sure this can be fixed by comipiling source code.