登录不能载入libnnz11.so

安装11g,由于没按手册中一步步操作，自己手动简单设置了下，安装后，登录有问题

解决如下：
$ sqlplus ‘/as sysdba’
sqlplus: error while loading shared libraries: /u01/app/oracle/product/11.1.0/db_1/lib/libnnz11.so: cannot restore segment prot after reloc: Permission denied

The reason is that SELinux is running in “enforcing” mode.

You can check it on file /etc/pam.d/login

Oracle development has recommended the following workaround while they correct the problem:

Switch SELinux from the default “Enforcing” mode that it is running in, to the “Permissive” mode.

Commands, as root:
======================
getenforce (returns “Enforcing”)
setenforce 0
getenforce (returns “Permissive”)

This allows SELinux to continue running, and logging denial messages, but SELinux will not actually deny any operations. Once Development has resolved this issue, you can (and should) return SELinux to the default “Enforcing” mode as follows:

Commands, as root:
======================
setenforce 1
getenforce (returns “Enforcing”)