Installing loopback adapter

How can I configure if I have a DHCP computer? Is it necessary to install a loopback adapter in order to install oracle database?What should I write in SYSTEM_DRIVE:\WINDOWS\system32\drivers\etc\hosts if I don't have a domain?
Thanks

Oracle has a listener component that listens on the network for requests coming to a specific machine for a specific database service. It loads that machine name at install time.
The database service locks the machine's name and attempts to register the service to the listener.
If later your machine name or IP changes because the DHCP lease has been renewed under a different name, the database will attempt to register with a listener osomewhere else ... kind-a useless.
Such is the life of a server - for security and performance, things tend to be statically defined, for example in the ...\etc\hosts file. But users with desktops and laptops prefer convenience to security and performance.
The almost-happy compromise is to install the loopback adapter, allowing the listener and the database server to have a static 'local' address.
You are free to create your own domain ... jim13.home will work as well as any other, allowing your database to be 'orcl.jim13.home' and you machine to be 'mycomputer.jim13.home'

Similar Messages

10g Install - Loopback Adapter

I am trying to install 10g on windows 2000.
But installation is failing at:
Network congifuration requirements failed : Because system has DHCP assigned.
I tried setting the loopback adapter in order to install. Editied the file SYSTEM_DRIVE:\WINDOWS\system32\drivers\etc\hosts
to include :
123.13.123.12 name.domain.com name
But again its failing with the same error.
I checked the previous post in forum but still everywhere its the same solution given.
Is there anything i am missing?

The Oracle Installation Guide for Windows has an entire section on installing a loopback adapter with instructions that are specific to your version of Windows.
Justin

Loopback adapter not working - can't install Oracle.

I'm attempting to install 10g on a Win XP box that is not connected to a network. Installation instructions dictate to install the MS loopback adapter before database installation. I installed it, but I can't get the loopback adapter to work. It can't find itself with ping and the 10g software won't install without it.
I'm up for a big job using Oracle and I want to upgrade my skills before I interview. This is very important to me. This may sound a bit corny, but I need to pay for a few medical bills and this job has enough of a pay raise to cover my expenses.
I don't like my current job and I love working with Oracle. Can someone please help me?
-Earl

Nvm, solved the problem myself using driver genius pro 10

How to install Microsoft Loopback Adapter

I want to install the Microsoft Lookback Adapter in Windows 7. I have done this under Vista either via:
1) Control Panel, Classic View, Add Hardware
2) Device Manager, right click on root node and select Add Legacy Hardware
I can't find the equivalent under Windows 7 - any suggestions?
Thanks!

I have a video that covers the steps to install the Microsoft Loopback Adapter in Windows 7. Hope this helps...
http://www.youtube.com/watch?v=R9674zGHxrE
Guides and tutorials, visit
ITGeared.com.

Do i really need to install Microsoft Loopback Adapter ?

i am installing oracle 10g on windows xp proffessional + AMD sempron 3100+
when started oracle universal installer, i received a warning like following :
DHCP configuration detected , you need to configure ur primary loopback adapter to MICROSOFT LOOPBACK ADAPTER
i m using belkin wireless card to connect to internet and i dont need to change it anyway.
please someone suggest me : whether i shud continue with this warning OR do i need something more before installing oracle 10g ???
thanks in advance,
-imranmca

I have Windows XP professional SP2 with a static ip address of my internal lan.
The installation don't pass the check about lan with the same message as you
"DHCP configuration detected , you need to configure ur primary loopback adapter to MICROSOFT LOOPBACK ADAPTER". Why?
I followed the instructions and now is all working adding in the hosts file 2 lines and not only one:
IP_addr computer_name.domain computer_name
IP_addr sid_name.domain sid_name
I'm not convinced of my euristic solution... can someone explain me why i have to configure the microsoft loopback adapter when i don't have a dhcp configuration?

Installed OBIEE on laptop without loopback adapter

Hello there
I have installed OBIEE 11.1.1.5 on my personal laptop which was on DHCP network and connected to Wi-Fi. However prior to installation i did not install & configure the loopback adapter. Now when i try to go out of my Wi-Fi network and its not on any network hence looses the IP address, the server fails to start correctly and throws following error 'could not get secure socket for host and port 9501'. Any suggestions on how to fix this problem?
Regards
Ashish

According to the following note, your installation will not proceed without the loopback for DHCP:
"If you attempt to install on a Windows machine that is using DHCP, does not have a primary DNS suffix, and does not have a loopback adapter configured, then the Oracle BI installer will stop at the screen prompting for the Administrator user details. This appears as a red cross in the tree on the left hand side of the installer. This issue is caused by the installer not being able to resolve the IP address to a hostname.The workaround is to configure a loopback adapter or primary DNS suffix"
Have you tried to set up the loopback and also the etc/hosts file and re-install?
if this helps please mark the response accordingly.

Installing a Loopback adapter without a Domain Name

Im trying to install the microsoft loopback adapter for the oracle 10g database. In one of the steps I was supposed to configure the "hosts" file within the driver directory of the windows folder.
Below is the precise directions... I dont have a domain name, I just have a internet service that gives me a dynamic IP address... what do I do?
Add a line to the SYSTEM_DRIVE:\WINDOWS\system32\drivers\etc\hosts file with the following format, after the localhost line:
IP_address hostname.domainname hostname
where:
IP_address is the non-routable IP address you entered in step 16.
hostname is the name of the computer.
domainname is the name of the domain.
For example:
10.10.10.10 mycomputer.mydomain.com mycomputer

Make one up.
Or not.
The domain name in the /etc/hosts is optional.
Since you use /etc/hosts, you are not using a DNS server for that specific interpretation. Therefore you can use whatever you want. I'd use something like 'glomph.tst' just so I can have thje joy of typing that in the browser URL box.

TNS-12538: TNS:no such protocol adapter, and install MS loopback adapter

Hello,
I am trying to install oracleAS Infrastructure and portal on my windows xp pc. (Oracle Application Server 10g Release 2 (10.1.2)
At some point of the installation for Internet Directory Configuration Assistant, there is an error:
===========================================================
Output generated from configuration assistant "Internet Directory Configuration Assistant" (attempt 2):
Myinfra.mypcname.domainname
java.sql.SQLException: Io exception: The Network Adapter could not establish the connectionat oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:137)
===========================================================
After did some searching, I find I may need to install MS loopback adapter.
So I followed http://support.microsoft.com/kb/839013 to install the MS Loopback adapter.
After I installed, When I open the Network Connetcions, I found there are two local area connetcions. One of then called local area connection 2, and it's MS loopback adapter. I got a warning for local area connection 2, it says that my pc does not have a IP address assigned, and its status is : limited or no connectivity .
I tried to repair to establish the full connection by clicking on the repair button, but the process is failed.
I also tried to run command: tnsping orcl ( orcl is my database service name ), after installed the loopback adapter.
tnsping orcl, still got this error:
======================================================
C:\>tnsping orcl
TNS Ping Utility for 32-bit Windows: Version 9.0.1.4.1 - Production on 16-MAR-20
06 22:41:35
Copyright (c) 1997 Oracle Corporation. All rights reserved.
Used parameter files:
E:\oracle\product\10.1.0\Db_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =mypcname.mydomainname)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
TNS-12538: TNS:no such protocol adapter
===================================================
btw. my pc IP was assigned by DHCP, and pc host name is something like: abcd.abc.edu
Q1. I am wondering which local area connection is currently used by default ? If it's the old one, how to configure it to use the new added one? ( local area connetcion 2 ).
Q2. Do I have to install MS Loopback adapter for installing Oracle Application Server 10g Release 2 (10.1.2)?
I don't have a fixed IP, however my IP is seldom changed. And I'm ok with 127.0.0.1
Any suggestion ?
Thanks for your reply,
Emily

Hello,
I am trying to install oracleAS Infrastructure and portal on my windows xp pc. (Oracle Application Server 10g Release 2 (10.1.2)
At some point of the installation for Internet Directory Configuration Assistant, there is an error:
===========================================================
Output generated from configuration assistant "Internet Directory Configuration Assistant" (attempt 2):
Myinfra.mypcname.domainname
java.sql.SQLException: Io exception: The Network Adapter could not establish the connectionat oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:137)
===========================================================
After did some searching, I find I may need to install MS loopback adapter.
So I followed http://support.microsoft.com/kb/839013 to install the MS Loopback adapter.
After I installed, When I open the Network Connetcions, I found there are two local area connetcions. One of then called local area connection 2, and it's MS loopback adapter. I got a warning for local area connection 2, it says that my pc does not have a IP address assigned, and its status is : limited or no connectivity .
I tried to repair to establish the full connection by clicking on the repair button, but the process is failed.
I also tried to run command: tnsping orcl ( orcl is my database service name ), after installed the loopback adapter.
tnsping orcl, still got this error:
======================================================
C:\>tnsping orcl
TNS Ping Utility for 32-bit Windows: Version 9.0.1.4.1 - Production on 16-MAR-20
06 22:41:35
Copyright (c) 1997 Oracle Corporation. All rights reserved.
Used parameter files:
E:\oracle\product\10.1.0\Db_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =mypcname.mydomainname)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
TNS-12538: TNS:no such protocol adapter
===================================================
btw. my pc IP was assigned by DHCP, and pc host name is something like: abcd.abc.edu
Q1. I am wondering which local area connection is currently used by default ? If it's the old one, how to configure it to use the new added one? ( local area connetcion 2 ).
Q2. Do I have to install MS Loopback adapter for installing Oracle Application Server 10g Release 2 (10.1.2)?
I don't have a fixed IP, however my IP is seldom changed. And I'm ok with 127.0.0.1
Any suggestion ?
Thanks for your reply,
Emily

How to configure MS Loopback Adapter in Windows 7

Hello all,
I installed SAP NetWeaver 7.02 SP06 ABAP Trial Version mainly to teach myself some
WebDynpro Programming for ABAP. Unfortunately this does not work correctly.
I created a View in a Web Dynpro Component and the Layout Preview does not work.
I activated the services suggested in
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/30129979-011c-2e10-fb9b-a60e0d704c1d&overridelayout=true
and did use the report RSICF_SERVICE_ACTIVATION with the variants
WEB DYNPRO ABAP
WEB DYNPRO ABAP DESIGN TIME
WEB DYNPRO ABAP TEST APPS.
In Addition I have set the FQDN as described in the document. I think the problem is the
MS Loopback Adapter. It is displayed with "No connection" in the Network and Sharing Center. I have no idea
how to change this. I have set the IP Adress to the on suggested in the Installation Instructions (10.10.0.10, Subnet-Mask 255.255.255.0) but the Loopback Adapter is displayed with no connection.
If I call a test webdynpro with the Hostname "localhost" it does work, so I think the webserver is running.
Any ideas ?
How do I set up the MS Loopback adapter under Windows 7 correctly ?
Thank you in advance,
Axel

Hi Axel,
Now that you know your local network works correctly for a computer not connected to internet or intranet, you have to do this:
1- For "No Connection" error (it is not necessary for the sap system to work), it's normal.
Create a local intranet with a 2nd computer if possible and make a configuration for home network after you will see "Connected"
2-Use of Pc hostname
You must configure the "profile parameters" by using transaction RZ10 and activate services (it's not easy, you have to take your time).
3- Webdynpro
To see the result of the webdynpro appli, you may know that not all web browser versions are compatible. The recent browsers don't work, use iexplorer8 or mozilla but not google ==> you will solve the problem of "timeout".
After that:
Activate the "internet communication framework" by using Transaction SICF. It takes you to "Maintain Services" and then fill Hierarchy Type ==>services, execute to reach at this step:
default_host/sap/bc/gui and icf ( If you've installed sap java, you will see both sap and sap_java)
do a mouse right click and select "Activate Service" and choose activate all.
You can now test the sample via web browser by using locahost.
Best regards.
Edited by: Tchounkeu Magloire on Nov 1, 2011 3:48 PM

How to Configure Microsoft loopback adapter in windows 2008

Hi all,
I am trying to install SAP IDES 6.0..... while i m trying to install it , it is asking forUnlimited Strength Jurisdiction Policy Files at runtime.
I do have local and US policy jar file, but i guess its asking for JCE extension file, i dont know about it. so i m not able to proceed
further. it gives osme error about local host. i think its about Microsoft loopback adapter. can anyone have idea abt it.How to
Configure Microsoft loopback adapter in windows 2008?
Can anyone help me ASAP coz i m stucked like anythng.
thanks
Cheers

Hi vinay
Thanks for reply...I m Installing SAP IDES...with DB2
I have upload JCE zip file...after clicking next button i m getting following Errors,
ERROR 2014-10-02 09:52:29
MOS-01185 The subkey 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DPS' does not exist on the 'localhost' host.
ERROR 2014-10-02 09:52:29
FCO-00011 The step collect with step key |NW_Onehost|ind|ind|ind|ind|0|0|NW_Onehost_System|ind|ind|ind|ind|1|0|NW_GetSidNoProfiles|ind|ind|ind|ind|2|0|collect was executed with status ERROR .
i guess its about Loopback adapter configuration. Still i m not sure... DO u have any idea about it.
How i can get rid of it.
Thanks

Using MS Loopback Adapter

Hi, I am running 10g at home on Windows XP Pro. I have installed 2 network connections, one for home internet (DHCP) and another one created with Microsoft Loopback Adapter for running Enterprise Manager.
To run EM, I have to disable the DHCP connection and enable Loopback Adapter. Is there a way to be able to run EM even with both connections enabled? Thanks.

Assuming you set a specific IP address for the loopback adapter, you should be able to specify that IP address in the URL (or an entry in your hosts file that resolves to that IP address) while both connections are active.
Justin

NIC Loopback Adapter

Mac friends
I am facing a problem concerning the creation of loopback adapter.Why do i need a loopback adapter???
Well my intention is to build a network lab on my imac.
The first step is to install GNS3 (Lately available in dmg package).Then we got to upload some router IOS's.So far so goodThe routers work without causing any problem to our powerful machine.
The second step is to install vmWare Fusion,which is a fantastic application to test virtual machines.Now we should install something like OS X Server or Windows Server 2003 or other OS we want to use. I did install Windows XP for network monitoring purposes...
And now the problem....How can i connect my routers to a loopback adapter in case i want to monitor my network through my mac????
Does anybody have an idea about connecting my routers to the virtual interfaces that are created through the OS intallation in vmWare????
Fellows we got excellent machines in our hands and sometimes it makes me angry the fact that i should test somethings in Windows PC's...
Any help will be acceptable....Thnx

Excellent test case, may by you should raise an SR and hope it ends up as a bug.
What happens if you "ping box01.data.local" what IP Address do you get back? You should be looking to get back the loopback address.
What happens if you do a nslookup 192.168.30.64 and 192.168.1.100?
Have you tred setting ORACLE_HOSTNAME? Not sure if this is just for the installer or not.

How to configue "Microsoft Loopback Adapter" ?

Hi,
I have Oracle 11GR1,Win XP. with DHCP enabled.
My conputer gets dynamic IP on connection to internet, so i want to install "*Microsoft Loopback Adapter*".
For that i visited this link:
http://download.oracle.com/docs/cd/B1930601/install.102/b14316/reqs.htm#BABGHEFB_
There, in section 2.4.5.3, Installing a Loopback Adapter on Windows 2003 or Windows XP,
step 20,they said to edit host file.
In this step i have some confusion:
>For example:
>10.10.10.10 mycomputer.mydomain.com mycomputer
What to write in above line in place of mydomain.com ?In above example mycomputer is the computer name.In my case
my computer name is user-5ef511de5
so , i wrote
10.10.10.10 user-5ef511de5 user-5ef511de5
This gave unexpected behaviour. That i was unable to connect on DB through any tool.
Please tell what exactly to write in that host file ?
My computer in standalone computer that frequently gets connected to internet via dial up connection.

bootstrap wrote:
How're you using oracle's own sqlplus? Are you able to connect to the database using cmd--> sqlplus "<username>/<password>@<tns alias>?
Yes
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.1.0.6.0 - Production
Start Date 28-NOV-2010 08:37:44
Uptime 0 days 0 hr. 15 min. 52 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File D:\app\shyam\product\11.1.0\db_1\network\admin\listener.ora
Listener Log File d:\app\shyam\diag\tnslsnr\shyam-5ef511de5\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
The listener supports no services
The command completed successfully
TNSNAMES.ORA:
EARTH =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = EARTH)
)Now, how do you think a connection is going to be established when your listener supports no services??
You may try this:
1. Make a static entry in listener for your database
or
2. Wait for sometime, so that pmon automatically registers the instance with listener
or
3. fire the command: sqlplus > alter system register;
Regards,
S.K.

Loopback Adapter

Dear All,
Windows 7 Ultimate
Oracle 11g R2
I have problem with EM, it doesn't work.
I tried all possible things to solve it by Renaming oc4j folder,recreating repository and changing TZ and .... etc and still doesn't work
there is one more possible which is configuring Loopback Adapter as some DBAs suggest in forum.
Could anyone one tell me by details how can i configure Loopback adapter in order to make my EM work.
Thanks in advance.

My car wont go. I read somewhere if I put petrol in it, it will make it go. how do I put petrol in to the car? I could tell you how to put petrol into the car if you tell me you know all thats wrong is theres no petrol in it.
if you dont know what the problem is, how do you know loopback adaptor will fix it?
If you were able to say "I know the problem can be fixed by installing the loopback adaptor" then you may have a case. but I didnt get that from your first post.
anyhoo....
How do I install Loopback adaptor in Windows7

Loopback adapter and zonealarm

Hi,
I tried to install Oracle Enterprize Edition but i got problem with DHCP so i installed a loopback adapter.However I think that zonealarm causes problem .Is there any solution. Do I have to unistall it or can I do something else.
Thanks

the problem is that when i try to install Oracle i get a warning "1 requirement to be verified-
Checking Network Configuration requirements ...
Check complete. The overall result of this check is: Not executed "
and then Enterprise Manager doesn't work

Installing loopback adapter

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