Oracle 11g on Redhat Linux : How to change the IP address
By Sharafat • May 15th, 2009 • Category: Technology • No ResponsesFollowing are the steps to change the IP address of the Linux machine, where Oracle 11g is installed.
1. Edit the following file as root:
/etc/sysconfig/network-scripts/ifcfg-eth0
Note, eth0 is the name of the network interface configured
# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Broadcom Corporation NetXtreme BCM5754 Gigabit Ethernet PCI Express
DEVICE=eth0
BOOTPROTO=static
HWADDR=00:1A:A0:B2:B2:5B
ONBOOT=yes
IPADDR=192.168.79.120
NETMASK=255.255.255.0
NETWORK=192.168.79.0
Change the IP address, Netmask and Network lines to the new values, eg:
IPADDR=192.168.78.110
NETMASK=255.255.0.0
NETWORK=192.168.78.0
Save the file
2. Edit the ‘/etc/hosts’ file as root to reflect the new IP address
# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.79.120 ora2.oracle.com ora2
to
# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.78.110 ora2.oracle.com ora2
3. Restart the network service by running the following as root or simply reboot the O/S:
# /etc/init.d/network restart
- routing tables may have to be updated if used
- this will interrupt the network service
- make sure you have configured other services for this new ip address ( eg: httpd )
4. Ping the new IP address and/or hostname to ensure that the network interface works and that the hostname is resolved to the new IP address
# ping 192.168.78.110
PING 192.168.78.110 (192.168.78.110) 56(84) bytes of data.
64 bytes from 192.168.78.110: icmp_seq=1 ttl=64 time=1.61 ms
64 bytes from 192.168.78.110: icmp_seq=2 ttl=64 time=0.163 ms
64 bytes from 192.168.78.110: icmp_seq=3 ttl=64 time=0.151 ms
— 192.168.78.110 ping statistics —
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.151/0.642/1.613/0.686 ms
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