参考的内容：

http://docs.oracle.com/cd/E11882_01/install.112/e24325/toc.htm#CHDCBCJF

http://www.cnblogs.com/yingsong/p/6031452.html

http://www.cnblogs.com/yingsong/p/6031235.html

步骤主要是有：

1、安装依赖的 软件包

2、创建用户和目录，修改目录所属的分组和权限

3、修改静默安装的配置文件，然后安装

4、安装静默监听

5、建库

遇到的问题和解决方法如下：

[FATAL] [INS-13013] Target environment do not meet some mandatory requirements.

解决方法：
./runInstaller -silent -ignorePrereq -responseFile /home/oracle/database/response/db_install.rsp
加上 -ignorePrereq

netca -silent -responsefile /home/oracle/database/response/netca.rsp ##注意一定要是绝对路径
Exception in thread "main" java.lang.UnsatisfiedLinkError: /u01/app/oracle/product/12c/db_1/jdk/jre/lib/i386/xawt/libmawt.so: libXext.so.6: cannot open shared object file: No such file or directory
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1647)
at java.lang.Runtime.load0(Runtime.java:769)
at java.lang.System.load(System.java:968)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1668)
at java.lang.Runtime.loadLibrary0(Runtime.java:822)
at java.lang.System.loadLibrary(System.java:993)
at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:50)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.NativeLibLoader.loadLibraries(NativeLibLoader.java:38)
at sun.awt.DebugHelper.<clinit>(DebugHelper.java:29)
at java.awt.Component.<clinit>(Component.java:547)

安装对应的依赖包

存在的问题：／etc/profile ~/.bash_profile 环境变量的生效时机，为何切换用户后每次都要source一次才能生效

学到了一些centos的小技巧