Install Oravle 8.1.7

Install Oravle 8.1.7

我在运行runInstaller后出现如下提示:

The Java RunTime Environment was not found at /bin/jre. Hence, the oracle universal cann't install....

请问我该怎么办?      
useradd 用户名
userpass 密码
添加组
编辑 .bash_profile