Checking installer requirements...
Exiting Oracle Universal Installer, log for this session can be found at /tmp/OraInstall2016-10-11_04-29-40PM/installActions2016-10-11_04-29-40PM.log
原因：开发系统版本不对
1. [root@hadoop01 database]# ./runInstaller --ignoreSysPrereqs 这样是忽略系统版本，后面还是会报错建议按下面的修改：
2. vi /etc/redhat-release 将redhat 5.1 该为 redhat 4 . 装完后改回即可
>>> Ignoring required pre-requisite failures. Continuing...
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2016-10-11_04-30-58PM. Please wait ...
The user is root. Oracle Universal Installer cannot continue installation if the user is root.
: No such file or directory
原因：不能用root用户安装：创建dba group和user oracle
Exception java.lang.UnsatisfiedLinkError: /tmp/OraInstall2016-10-12_08-59-12AM/jre/1.4.2/lib/i386/libawt.so: libXp.so.6: cannot open shared object file: No such file or directory occurred..
原因是：缺少支持打印的图形化动态链接库libXp.so.6
yum install -y libXp.so.6
yum install -y libXt.so.6
yum install -y libXtst.so.6
Warning: Cannot convert string "-b&h-lucida-medium-r-normal-sans-*-140-*-*-p-*-iso8859-1" to type FontStruct
原因：好像是字符集的问题，而且不能启动安装页面，于是./runInstaller
执行netca或dbca时, "UnsatisfiedLinkError exception loading native library: njni10"错误解决
安装对应32位glibc
重新安装：
ORA-27125:unable to create shared memory segment
安装被中断。
解决方法如下：
#id oracle
uid=500(oracle) gid=501(oinstall)groups=501(oinstall),502(dba),503(asmadmin),504(oper)
[root@rac2 ~]# more/proc/sys/vm/hugetlb_shm_group
0
下面用root执行下面的命令，将dba组添加到系统内核中：
# echo 502 >/proc/sys/vm/hugetlb_shm_group
--这里的502 是上面的id 命令查看出来的。
# more /proc/sys/vm/hugetlb_shm_group
502
然后重新DBCA，成功建立实例！
