1.修改主机名(从克隆过来的vm)
[root@xag138 ~]# cat /etc/hostname
xag100
[oracle@xag138 ~]$ cat /etc/sysconfig/network
# Created by anaconda
NETWORKING=yes
HOSTNAME=xag100
# oracle-rdbms-server-11gR2-preinstall : Add NOZEROCONF=yes
NOZEROCONF=yes
vim /etc/hosts
#增加如下
192.168.40.100 xag100
2.網卡配置
[root@xag138 ~]# cd /etc/sysconfig/network-scripts/
[root@xag138 network-scripts]# cat ifcfg-ens33
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
NAME="ens33"
UUID="0224e944-0b68-47d5-b327-71d0e5560845"
DEVICE="ens33"
ONBOOT="yes"
IPADDR="192.168.40.100"
GATEWAY="192.168.40.2"
NETMASK="255.255.255.0"
DNS1="8.8.8.8"
#重啟網卡
[root@xag138 network-scripts]# service network restart
2.安装监听
[oracle@xag100 ~]$ export DISPLAY=192.168.0.7:0.0
[oracle@xag100 ~]$ netca
3.修改环境变量
[oracle@xag100 ~]$ cat scripts/setEnv.sh
TMP=/tmp; export TMP
TMPDIR=/tmp; export TMPDIR
ORACLE_HOSTNAME=xag100; export ORACLE_HOSTNAME
ORACLE_UNQNAME=DB100; export ORACLE_UNQNAME
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=/u01/app/oracle/product/11.2.0.4/db_1; export ORACLE_HOME
ORACLE_SID=DB100; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
PATH=/usr/sbin:/u01/app/oracle/product/11.2.0.4/db_1/bin:/usr/sbin:/u01/app/oracle/product/11.2.0.4/db_1/bin:/usr/sbin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/oracle/.local/bin:/home/oracle/bin; export PATH
PATH=/u01/app/oracle/product/11.2.0.4/db_1/bin:/u01/app/oracle/product/11.2.0.4/db_1/bin:/usr/sbin:/u01/app/oracle/product/11.2.0.4/db_1/bin:/usr/sbin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/oracle/.local/bin:/home/oracle/bin; export PATH
LD_LIBRARY_PATH=/u01/app/oracle/product/11.2.0.4/db_1/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=/u01/app/oracle/product/11.2.0.4/db_1/JRE:/u01/app/oracle/product/11.2.0.4/db_1/jlib:/u01/app/oracle/product/11.2.0.4/db_1/rdbms/jlib; export CLASSPATH
alias sqlplus=‘rlwrap sqlplus‘
alias rman=‘rlwrap rman‘
[oracle@xag100 ~]$ source .bash_profile
[oracle@xag100 ~]$ echo $ORACLE_SID
DB1100
4.创建实例（dbca）
[oracle@xag100 ~]$ dbca
5.重复上面步骤1到4 创建 主机：xag101，实例：DB101