图形化界面安装oracle报错Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set.

问题描述：

在Linux + oracle 安装时，采有root 帐号登录x-windows 界面，然后 

$su oracle 登录录安装Oracle 报以下错误：

 >>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set.
Some requirement checks failed. You must fulfill these requirements before
continuing with the installation,Continue? (y/n) [n] 
>>> Ignoring required pre-requisite failures. Continuing...The commandline for unzip:/tmp/orcl/linuxamd64_12102_database/database/install/unzip -qqqo 

解决办法：

1、直接用oracle用户登录 x-window ，进行安装；

2、用root用户运行 
# xhost  + 本机IP 

然后  

$su oracle 安装oracle 数据库

原文地址：http://blog.csdn.net/snowfoxmonitor/article/details/52346512