下载脚本
wget https://raw.githubusercontent.com/spdir/oracle-single-install/master/oracle_install.sh && chmod +x oracle_install.sh
脚本使用安装前配置（root用户执行，尽量为纯净环境)
安装前请将Oracle 12C安装包放置在/tmp目录下
系统需要具备512MB的交换分区
并配置好以下信息
本机IP地址 HostIP
Oracle用户密码 OracleUserPasswd 默认为oracle.com
Oracle数据库管理员密码 ORACLE_DB_PASSWD 默认为 systemOracle.com
Oracle SID/ServerName SID 默认为 oriedb
是否安装实例 IS_INSTANCE
0-不安装实例
1-安装单实例
2-安装cdb : 因为CDB在初始化过程中需要输入参数，需要手动初始化,具体步骤会在最后进行提示
项目地址：gitee: https://gitee.com/spdir/oracle-single-install
github: https://github.com/spdir/oracle-single-install
我自己的安装报错：
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2018-09-28_04-34-03PM. Please wait …[FATAL] [INS-32038] The operating system group specified for central inventory (oraInventory) ownership is invalid.
CAUSE: User performing installation is not a member of the operating system group specified for central inventory(oraInventory) ownership.
A log of this session is currently saved as: /tmp/OraInstall2018-09-28_04-34-03PM/installActions2018-09-28_04-34-03PM.log. Oracle recommends that if you want to keep this log, you should move it from the temporary location.报错原因：操作系统指定用户组无效
解决方案：删除oracle 用户及其属组，重建后解决。
原贴附下：https://www.cnblogs.com/zhichaoma/p/9288739.html#undefined