CentOS 安装后，SQLPLUS登陆错误

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[oracle@linuxhost~]$ sqlplus /nolog
sqlplus: error while loading shared libraries: /u01/oracle/lib/libclntsh.so.11.1: cannot restore segment prot after reloc: Permission denied

解决办法：

在图形界面》系统》管理》安全级别和防火墙设置》SELinux 禁用（如果安装系统时禁用不会产生这样的错误）

解决方法：

[root@linuxhost lib]# /usr/sbin/getenforce

Enforcing

[root@linuxhost lib]# /usr/sbin/setenforce 0

[root@linuxhost lib]# cd /etc/selinux

[root@linuxhost selinux]# ls

config restorecond.conf semanage.conf targeted

[root@linuxhost 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

把SELINUX设置为disabled 就好了，保存后退出。

SELINUX不设置为disabled 状态的话，FTP传输也会失败。