$ sqlplus / as sysdba
sqlplus: error while loading shared libraries: /u01/app/oracle/product/11.2.0/dbhome_1/lib/libclntsh.so.11.1: cannot restore segment prot after reloc: Permission denied
root用户 将/etc/selinux/config文件中的
selinux=enforce 改为disable
重启操作系统