How do I change the hostname of my PC?

I am using only base Arch, just the command line version, nothing extra.
After fresh install, the default hostname is myhost.
I want to change it. The command
hostname V-Arch-Min
does not work...

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How can I change the hostname after Oracle Database XE is installed?

I currently have XE installed and working on my ubuntu machine.
When I change the hostname of my machine, oracle database no longer connects and says "ORA-12505, TNS:listener does not currently know of SID given in connect descriptor".
Can anyone tell me how I can change the hostname of my machine and keep oracle database working correctly?
Thanks

Stopping, reconfig, starting the instance is one way, although that is somewhat like using petrol to kill ants.
The database instance pretty much does not care about the hostname setting. But the listener does- the installer finds the hostname and uses that in the setup bits.
As posted somewhere here, when using the 1521 default listener port, the listener.ora config file can just be moved out of the way. Another potential fix is setting the HOST=0.0.0.0 for the IPv4 "any IP" address setting, or setting it to the correct hostname. Or HOST= can be set to IPv4 address. For IPv6, have to use HOST=<hostname> and it must resolve, can't HOST=... an IPv6 address.
To move the listener file, stop the listener first. To change a HOST=... setting, also stop the listener first.
lsnrctl stop
mv $ORACLE_HOME/network/admin/listener.ora $ORACLE_HOME/network/admin/listener.bk0
# or
vi $ORACLE_HOME/network/admin/listener.ora
# change HOST=<whatever> to the correct value, or 0.0.0.0
lsnrctl start
sqlplus /nolog
conn system
... password ... Connected.
alter system register;
exit
# start the lsnr
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# check the status, services
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If the host has a wireless (or another NIC) that one does not want to offer up remote connections on, the 0.0.0.0 is not a good way to go either
Message was edited by: clcarter
typos

How do I change the hostname used when Mac Mail sends EHLO

Hi All,
I work for a tech support group and one of our clients is experiencing some trouble sending emails. When they connect to their outbound mail server Mac Mail sends the EHLO command with a hostname like 01:23:45:67:89:ab.home
Another Mac on the network sends a hostname like 00:A0:C9:14:C8:29.home2
So they appear to be the a Mac address for the computers NIC followed by a generic location in this case .home, not sure if thats a generic Mac thing or something they chose to configure but because the hostname is not an ip address and contains ".(dot)home" the outbound mail server our client uses believes it to be a domain so then rejects it as an invalid domain when a lookup on it fails.
I've changed the hostname of one of the Macs using the command "cutil –-set HostName new_hostname"
This has changed the hostname when checking it by the hostname command in a Terminal but Mac Mail still persists in using the old hostname. We've tried rebooting the machine and rebooting the machine with the left shift key held down as I believe this does some kind of rebuild of configuration files, but still the old hostname is send when Mac Mail sends EHLO.
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Replying to myself:
You can sign out from the account in iBooks and then sign in to another one.
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How to change the hostname was set/defined in SAP system?

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While in Java URL, it is recognized as lower case "abc". With my test, the Java URL is not case sensitive for the HOSTNAME part in HTTP link as I tested to change the hostname both in upper case and lower case in etc\hostname file, the URL both are working. (not sure if this is due to the test is with intranet or not).
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Many thanks in advance,
Perry Song

Section 4.13 "Checking the Consistency of the Host Name" in [This Upgrade Guide|https://websmp208.sap-ag.de/~sapidb/011000358700000353422008E] has a good explaination of what & how to check your hostname / parameter configuration.
on a windows box, another way to get the TCP/IP name is to type 'hostname' from a CMD window.

[Solved] How does one go about changing the hostname in arch nowadays?

Everything I've seen on the subject references /etc/rc.conf, which I believe is no longer used.
I've updated /etc/hostname, but when hostname -f does not return the expected.
Last edited by mreiland (2013-07-14 21:09:07)

mreiland wrote:How does one go about changing the hostname in arch nowadays?
Please see "man archlinux".
Also, I can never remember if hostname is one of those things you need to reboot for...
Last edited by drcouzelis (2013-07-13 16:24:10)

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How do I change the hostname of my PC?

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