Couldn't resolve the host name (AGAIN!!!!)

I get this error alot! I've searched all kinds of forums and tried so many things that sometimes work (e.g., clear cache, restart). This is a common problem that renders the Playbook useless. It's so frustrating when you need to quickly jump online to check something and have to spend 20 minutes troubleshooting. What's the point?
According to my Wi-Fi tab, I'm connected and everyone else in the house is able to access the Internet without a problem (they have Apple products, I'm an die-hard but slightly embarrased RIM fan).
Does anyone know how to get around this error?

Last time I had this issue was at a hotel and kept tapping the link and it worked
At home I switched to opendns.org as my ISP DNS was overloaded
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Error code "Couldn't resolve the host name"

I cannot access internet from tablet
WiFi shows connected
noticed this yesterday
any suggestions on how to fix error

Did you manually setup your wifi. Can not resolve host name usually means a problem with the dns. Which router are you using?
Be a Shepard and not an iSheep.

Error-couldn't resolve the host name

Receivd this message when trying to connect to the internet. any suggestions? tried restarting tablet..still not working.

That sounds like a DNS error.
Go to your Options > WiFi
Click on the Wifi icon with the question mark on it. Then use the drop down box and select Internet connection. You'll see your DNS settings. Make sure that you have stuff there and that they are valid.
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Cant resolve the host name in mac

cant resolve your hostname then do the following work around:
sudo vi /private/etc/hosts
create the entry with IP and hostname ....no need of domain..

cant resolve your hostname then do the following work around:
sudo vi /private/etc/hosts
create the entry with IP and hostname ....no need of domain..

Error - couldnt resolve the host name - anyone know how to fix?

Solved!
Go to Solution.

Something in the DNS chain cannot convert from the english web page name into an IP address.
In Browser pull down settings, Privacy and Security., Clear all.
Restart Playbook.
Restart router.
It may clear itself if your suppliers DNS servers are choked.

The host name cannot be resolve ? ( with linksys router )

Hi all, I have some problem with setting up a network. I tried to set my network according to http://wiki.archlinux.org/index.php/Configuring_network the network/internet is fine except the host name with "http://" cannot be resolve. For example
ping 216.239.61.104
ping www.gogle.com
both work fine, until I try,
ping http://www.google.com
it give me error, tell me that the hostname cannot be resolved. I tried to config my network using both dhcp or fix-ip, but the problem still present in both way. Internet works fine in windows/ubuntu.
Anyboy has any clue ? The router I use is wrt54gl with tomato firmware.
thanks in advance.

kowalski wrote:
Hi,
if pinging www.google.com works then dns resolving _does_ work. Why would you want to ping http://something?
You should try opening http://whatever in a browser not pinging it from command line.
Or am I missing something obvious?
Yes, for instance, all mirror list for pacman is in "http://...." or "ftp://...." form. I could easily change the repository list, but I'm not sure if it'll have same problem in future with other program. Also, if it work in ubuntu and windows, why not arch.

OracleVM Manager template 2.2.0 trying change the host name

Hi,
I have installed the OracleVM Manager 2.2.0 template
into an OraclVM Server 2.2.1.
Reading the OracleVM Manager 2.2.0 install
instructions "Readme_for_Media_Pack_B59146-01.txt" and doing
the installation in the interview area, I am asked
to provide the fully qualified domain name as the
name of the OracleVM Manager.
Therefore, I provided something like this.
ovmmanager.mydomain.mytopdomain
Later, when I was in the OracleMV Manager,
I noticed the following.
Correct information was written in my /etc/hosts file.
192.168.1.160 ovmmanager.mydomain.mytopdomain ovmmanager
The case seems however, that unusual information
was written to the /etc/sysconfig/network file.
HOSTNAME=ovmmanager.mydomain.mytopdomain
When I type "uname -a", the results are shown.
ovmmanager.mydomain.mytopdomain
I say, "unusual", because most people prefer a single
name "ovmmanger" to be the host name.
I have tried to permanently change the host name of the computer by
changing the contents of the /etc/sysconfig/network file to the following.
HOSTNAME=ovmmanager
Next, at the command line I would type the following.
hostname ovmmanger
When I type "uname -a", the results are shown.
ovmmanager
However, every time I do an 'xm shutdown' to the
OracleVM Manger (the ovmmanger), and then later do an
'xm create vm.cfg' to start the ovmmanger,
when I type a "uname -a", the results are shown.
ovmmanager.mydomain.mytopdomain
When I look at the contents of the /etc/sysconfig/network file
the contents are back to the original contents.
HOSTNAME=ovmmanager.mydomain.mytopdomain
instead of my preferred contents
HOSTNAME=ovmmanager
My first question is the following.
By design, does the OracleVM Manager 2.2.0 template
supposed to have a host name to be a
fully qualified domain name?
ovmmanger.mydomain.mytopdomain.
My second question is the following.
If the situation is satisfactory to have just
ovmmanger
as my host name, then how do I prevent the host name renaming
process to reoccur every time I do an 'xm create vm.cfg' to start
the OracleMV Manager?
Thank you
AIM

First Question: No, it does not have to be a full qualified hostname. As long as the hostname is resolved in your network short qualified is fine.
Second Question: You don't have to do anything. In OVM Template design the configuration tool is just called the first time your template is started. All succeeding startups will not go through the configuration again. (There is however an option to reenable/reset the VM that the configuration is called again).
Regards
Sebastian

Cannot change the host name in registry.xml

After installing WebLogic 10.3.3 on Oracle VM template, the regsitry.xml and registry.dat files cannot be changed to reflect the hostname of the VM Guest
nstall WebLogic server in a OVM template. The host tag in registry.xml will contain the hostname from the template (e.g. firsttemp.oradev.inddev.national.com.in) .
Create a guest using this OVM Template and the The host tag in registry.xml will still contain the hostname from the template (e.g. firsttemp.oradev.inddev.national.com.in) rather than the actual hsotname.
I dont want to change it manually in the register.xml since it may cause problems in future
any pointers are highly appreciated..

It is not recommended to change the name for an IP addressIt is not recommended by who? AFAIK there is no such sentence in documentation.
But there is other:
host Required. Specify the host name or IP address of the database server computer.
Instad of "It is not recommended..." better use "Consider this..."
, as if ever it changes in the future, you'll have to be back and change once again your ip.The same is truth when we are speaking about FQDN (fully qualified domain name).
How often your company changes the IP adresses on server platform?
My experience from past:
First case:
My company has rebranded and and domain name has been changed but IP has not. Unfortunatelly we were not using OID for resolving. If there were FQDN used then would have to make changes in many files. Fortunatelly we were using IP addresses.
Now we are using OID for resolving of tnsnames (as primary method).
What I want to say is both solutions (FQDN or IP) are fine. Each of them has some advantages and also disadvantages.

Change the host name in Listener.ora to fixed IP address

in Listener.ora i want change host name to IP :
==== OLD ====
LISTENER =
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL= TCP)(Host=Server)(Port= 1521))
(ADDRESS=(PROTOCOL= IPC)(KEY = ORCL))
=== WHAT I NEED ===
LISTENER =
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL= TCP)(Host=100.100.110.1)(Port= 1521))
(ADDRESS=(PROTOCOL= IPC)(KEY = ORCL))
how can i do this .

It is not recommended to change the name for an IP addressIt is not recommended by who? AFAIK there is no such sentence in documentation.
But there is other:
host Required. Specify the host name or IP address of the database server computer.
Instad of "It is not recommended..." better use "Consider this..."
, as if ever it changes in the future, you'll have to be back and change once again your ip.The same is truth when we are speaking about FQDN (fully qualified domain name).
How often your company changes the IP adresses on server platform?
My experience from past:
First case:
My company has rebranded and and domain name has been changed but IP has not. Unfortunatelly we were not using OID for resolving. If there were FQDN used then would have to make changes in many files. Fortunatelly we were using IP addresses.
Now we are using OID for resolving of tnsnames (as primary method).
What I want to say is both solutions (FQDN or IP) are fine. Each of them has some advantages and also disadvantages.

How to resolve a host name from IP using JNDI/DNS service provider

Hi
I got two questions on JNDI/DNS service provider:
1) How to resolve a host name when i got an IP
I understand How I do it inverse.
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.dns.DnsContextFactory");
env.put(Context.PROVIDER_URL, "dns://"+server+"/"+domain);
DirContext ictx = new InitialDirContext(env);
Attributes attrs1 = ictx.getAttributes(host, new String[] {"A"});
2) This example above works when I specify the domain in the provider url.
If I am not specifing a domain but only the dns server I got an NameNotFoundException.
What should I do if I don't got the domain?
get the availible domains and loop on them?

Hi,
if your DNS server supports that, you can do a reverse DNS lookup. This works as follows:
String server = "your.dns.server";
String domain = "in-addr.arpa";
String ip = "4.3.2.1";
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.dns.DnsContextFactory");
env.put(Context.PROVIDER_URL, "dns://" + server + "/" + domain);
DirContext ictx = new InitialDirContext(env);
Attributes attrs1 = ictx.getAttributes(ip, new String[] {"PTR"});1: Use the pseudo-domain in-addr.arpa
2: Use the reverse IP address for lookup, i.e. if your host has 1.2.3.4, use 4.3.2.1!!
3: Request the PTR attribute
see also [http://en.wikipedia.org/wiki/Reverse_DNS_lookup|http://en.wikipedia.org/wiki/Reverse_DNS_lookup]
Martin

How to check the host name or rename the host name in Enterprise Manager

Hello,
How do i check the host name or rename the host name in Enterprise Manager for Oracle 11g?
Regards,
Ming Man

there is a shell script called chgip or something
like that is there . I used it for IAS. I beleive the
same is there for database too
Rajesh AlexIf there is, I have not been able to find it.
Off the top of my head, changing the host name involves at least the following (others feel free to add on):
For listener and connectivity
- listener.ora
- tnsnames.ora (on all clients as well)
- potentially ldap.ora (on all clients as well)
- init.ora parameter LOCAL_LISTENER
For admin using Enterprise Manager (starting 10g)
- the contents of the sysman schema
- the directory name of the OEM agent directory
- the directory name of the OEM OC4J config directory
- various config files in the OEM OC4J config directory
Oracle provides the emca to handle this last set.
In addition, the following refer to hosts that are [probably] not local
- init parameter REMOTE_LISTENER (usually just points to a tnsnames.ora entry naming remote hosts)
- init parm SMTP_OUT_SERVER
Again, adding to the list might be interesting.

ORA-12545 error after changing the host name as IP address in Tnsnames.ora

HI,
I tried to connect PHP and oracle in Red Hat linux. I got error ORA-12545 after changing the host name as IPAddress in Tnsnames.ora file. In sqlnet.ora file also i have entry for tnsnames in Directory_Path. I struggled so much but i couldnt solve that. Please give me ur valuable suggestions....

12545, 00000, "Connect failed because target host or object does not exist"
// *Cause: The address specified is not valid, or the program being
// connected to does not exist.
// *Action: Ensure the ADDRESS parameters have been entered correctly; the
// most likely incorrect parameter is the node name. Ensure that the
// executable for the server exists (perhaps "oracle" is missing.)
// If the protocol is TCP/IP, edit the TNSNAMES.ORA file to change the
// host name to a numeric IP address and try again.
Seems you specified wrong IP address.

HT201320 I have an email account through yahoo. I am having trouble setting it upon my iPhone and can't receive or send emails!!!! I contacted Rogers and they said I need to find out the host name of the incoming server, in other words yahoos host name. H

I have an email account through yahoo. I am having trouble setting it upon my iPhone and can't receive or send emails!!!! I contacted Rogers and they said I need to find out the host name of the incoming server, in other words yahoos host name. Help!!

Yahoo's servers are notoriously unreliable. Use the "Yahoo" account type when setting it up. If it doesn't work, and you are positive the credentials are correct, wait a while and try again.
While you're waiting, set up a free gmail or iCloud email account.

How can I get the host name from Email address?

hi
When I using socket to develope an email-sending servlet,I don't know how to get the host name from emial address.can you help me,thanks

Stripping off the user name will give you the domain of from field in the message. This is not the same as the host. Take a look at:
http://www.stopspam.org/email/headers/headers.html
Theres a pretty good discussion about email headers and how to use the information. You probably want to check the information here against the RFC.
Sean

Changing the Host Name in Lite Database

Hi,
I am using oracle 10g Database release 2 and oracle 10g Lite Database Release 3
OS is Windows 2003 Server
I changed the host name
“Old Name Oracle10g New Name OracleTENR1”
Also change the host name in Listener.ora and tnsname.ora after that i restart the machine
I checked the Database status (it is in OPEN STATE only )
And then I start the mobile server it's not working ….
How to change the host name in the oracle 10g Lite Database ?
Please Advice
Thank U
SHAN

hi,
Thanks Fot the Reply ......
I have changed the hostname in webtogo.ora
Mobile Server is Working...
But the Problem is "with the Browser http://localhost/webtogo it shows this error message in the Screen"
500 Internal Server Error
java.lang.NullPointerException at oracle.lite.web.util.TaggedHtml.parse(Unknown Source) at oracle.lite.web.util.TaggedHtml.init(Unknown Source) at oracle.lite.web.WebtogoLogonPage.init(Unknown Source) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpApplication.loadServlet(HttpApplication.java:2231) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpApplication.findServlet(HttpApplication.java:4617) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpApplication.findServlet(HttpApplication.java:4541) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpApplication.getRequestDispatcher(HttpApplication.java:2821) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:740) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:218) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:119) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112) at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303) at java.lang.Thread.run(Thread.java:595)
Please Advice.....
thank U
SHAN

Couldn't resolve the host name (AGAIN!!!!​)

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Couldn't resolve the host name (AGAIN!!!!)