I am having issues installing oracle 11g R2 on my linux virtual machine. I am doing this for school so am a beginner at this stuff. The instructor tells us run ifconfig
and then run cat /etc/hosts.
First of all he says that our output should look like the following:
eth0 Link encap:Ethernet HWaddr 00:0C:29:88:22:36
inet addr:192.168.1.57 Bcast:192.168.1.255 Mask:255.255.255.0
:
[root@OraLinux ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.57 oralinux oralinux.localdomain
here the IP addresses match.
Mine looks like this:
eth2 Link encap:Ethernet HWaddr 00:0C:29:B2:E2:A9
inet addr:192.168.102.129 Bcast:192.168.102.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feb2:e2a9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21 errors:0 dropped:0 overruns:0 frame:0
TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10247 (10.0 KiB) TX bytes:2250 (2.1 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:136 errors:0 dropped:0 overruns:0 frame:0
TX packets:136 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:11488 (11.2 KiB) TX bytes:11488 (11.2 KiB)
[oracle@OraLinux ~]$ cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.153.131 oralinux oralinux.localdomain**
he then says if the IP addresses don't match run netca and add the port listner on 1521. When I try to do this netca throws me a message saying that port 1521 is already in use and that I cannot configure properly until I resolve the issue. Can someone please help me.
I encountered and solve this problem today..
Turns out the solution is:
1) Your ethernet adapter IP address must match with the one you configured in /etc/hosts
2) Your system/VM must be connected to LAN
Otherwise, it will say 1521 is being used. Hope it helped. Cheers.
You are probably already running Oracle Listener on this port - 1521. Run ifconfig -a to see all network interfaces. lsnrctl status to see default listener status - is it running, what port, etc. You need to find what ip addresses your computer has assigned with ifconfig and create a listener that will listen on this network interface.
Something else might be using port 1521. Try netstat -ntap | grep 1521 to find out what it is (you need to be root for this to work).