使用root用户安装rlwrap
su -

1.安装readline
vim /etc/yum.repos.d/rhel-source.repo
[yum]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=file:///mnt/Server
enabled=1
gpgcheck=0
yum install readline*

2.安装rlwrap
tar -zvxf rlwrap-0.37.tar.gz
cd rlwrap-0.37
./configure
make
make install

3.配置环境变量使用rlwrap
vim /home/db/oracle/.bash_profile
alias sqlplus='rlwrap sqlplus'
alias rman='rlwrap rman'