相应的环境平台：

OS: Linux TEST11G 2.6.18-8.el5 #1 SMP Fri Jan 26 14:15:21 EST 2007 i686 i686 i386 GNU/Linux

DB Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

在vm下redhat5下安装oracle 11g后，登录sqlplus 报：

sqlplus: error while loading shared libraries: /home/oracle/app/oracle/product/11.2.0/dbhome_1/lib/libclntsh.so.11.1: cannot restore segment prot after reloc: Permission denied

但解决方式:

1，root用户登录
2，使用cd命令切换当前文件夹到 /etc/selinux

[root@TEST11G ~]# cd /etc/selinux
[root@TEST11G selinux]# ll
total 32
-rw-r--r-- 1 root root  448 Jun  6  2014 config
-rw------- 1 root root  144 Jan 16  2007 restorecond.conf
-rw-r--r-- 1 root root 1752 Dec 22  2006 semanage.conf
drwxr-xr-x 5 root root 4096 Jun  6  2014 targeted

3，使用vim打开config文件
找到里面的SELINUX条目，设置成disabled

[root@TEST11G selinux]# vi config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#       enforcing - SELinux security policy is enforced.
#       permissive - SELinux prints warnings instead of enforcing.
#       disabled - SELinux is fully disabled.
SELINUX=disabled

# SELINUXTYPE= type of policy in use. Possible values are:
#       targeted - Only targeted network daemons are protected.
#       strict - Full SELinux protection.
SELINUXTYPE=targeted

4，重新启动系统