[root@oraclelinux6 ~]# more /etc/hosts 127.0.0.1 localhost oraclelinux6.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
[oracle@oraclelinux6 ogg_12.1.2.0.1_mysql55]$ hostname oraclelinux6.localdomain