MS Loopback adapter reinstall?

Hello, I had originally installed the MS loopback adapter before installing 10g but i found that it was gone after re-imaging a laptop. Is it safe to simply re-create the same loopback adapter with the same static IP address and settings, will Oracle not know the difference when it is running?
Thanks

I deleted the loopback adapter on my laptop and reinstalled it using the same static IP address and Oracle chugged along like nothing had happened. This was on XP SP2 using 9i though. Don't know if 10g will choke or not.
Tom

Similar Messages

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

Is there a way to create a loopback adapter for the mac?

In the MS world, there is a MS Loopback adapter, that allows to create a virtual network card and simulates that there is a LAN cable connected to it.
I would like to see if there is a way to do that in the mac world.
I found this link and I believe is a hint, but I'm not sure if is going to work, I don't want to try it and damage my network settings.
Thanks in advance for your help.
Greg

Here is the link I found http://stackoverflow.com/questions/87442/virtual-network-interface-in-mac-os-x
I have VMWare Fussion running on my MAC, but I want to use IIS on my 2003 Server in VMWare, and I want to browse from Safary to my application running on IIS.
Thanks in advance for your help.
Greg

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

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

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 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.

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.

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?

Windows 2008 R2 - Question About Loopback Adapter

Hello,
I have the following situation:
I have two Windows Server 2008 R2 Enterprise with Service Pack 1.
I use a load balancer (Radware Alteon) in DSR mode, to load balance traffic for between these servers.
To use DSR, I have to configure a loopback adapter on each of the, with the IP address of the VIP that is configured on the load balancer.
Everything is working ok, the adapter is recognizing the network and traffic is being loadbalanced perfectly.
The issue starts here:
I also configure a health check on the load balancer, so it can check the health of the server, and stop forwarding traffic to a server when it fails.
One of the failure conditions, is when the loopback adapter fails.
When the physical adapter fails, it is easy to recognize, because the health check, on its basic, is sent to the IP address and MAC address of the physical NIC of the server.
When it is not responding, the server is considered as failed.
However, to recognize a failure of the loopback adapter, the health check is being sent to the IP address of the loopback adapter (that is the VIP) and to the MAC address of the physical NIC.
The load balancer is doing that perfectly and the health checks are passed when the loopback is up.
However, when we simulate a loopback failure, by disabling it, the load balancer does not recognize the failure.
Instead, we just see, in the load balancer statistics, that the server response time is very high (more than 3500000 ms) but the server is up.
The check that we use is a simple ICMP ping request, and we are expecting an ICMP reply withing the specified configured period of time (that is, the timeout).
We started a sniffer catpure on the switch connected to the server.
We saw the following behavior:
When the loopback is disabled, the server still replies to the ICMP requests, but with ICMP redirect (redirect for network)
The ICMP redirect message is sent fromt the source IP address and MAC of the physical NIC.
Then, another ICMP request is sent, and here is also a weird behavior:
The request is sent from the source IP address of the load balancer and source MAC of the server, destination IP address of the loopback adapter (that is the VIP) and destination MAC of the load balancer.
It is clear that this ICMP request is from the same "ICMP session" that was just sent, because it is being sent milliseconds after the first request and ICMP redirect reply. It is not a new health check, because a new health check will be sent after
the interval configured (5 seconds after the first ICMP request).
I don't know if this request is being sent from the server, which means that it spoofs a request from the load balancer by using its IP address as the source, or is it a request being sent from the load balancer, which means it spoofs a request from the server
by using its MAC address as the source.
My question is, if anyone saw such behavior of:
1.) ICMP redirect from the server on Windows 2008 R2 when the loopback is disabled.
2.) A seconds request within the same timeframe of the first request, not a part of a second health check.
I configued the loopback adapter properly, with the weakhostsend and weakhostreceive enabled, and with forwarding enabled (using netsh).
I tested the same topology with Windows Server 2003 Enterprise Edition Service Pack 2.
On this OS, when the loopback is disabled, it just not sending an ICMP reply at all.
Thanking in advance, Udi Dahan.

Did you get an answer?

Microsoft Loopback Adapter

Hello,
I need help with configuring MS Loopback Adapter. I am trying to setup Oracle 11g r2 on my Windows 7 Professional laptop which is not connected to any network. There is no virtual network like VMWare either. I followed the instructions in the Oracle release notes but the loopback adapter still says "No Network Access"
The Device Manager for the adapter says, "This device is working properly"
C:\Windows\system32>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : P7One
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Loopback Adapter
Physical Address. . . . . . . . . : 02-00-4C-4F-4F-50
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.10.10.10(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
Control Panel>>System shows:
Computer Name: P7One
Full Computer Name: P7One
My laptop is not on any domain. I edited the hosts file as follows:
10.10.10.10 P7One P7One
Network Connections>>Local Area Connection 2
Properties:
I check IPv4 and unchecked everything else.
IPv4 Properties>>Advanced>>WINS
I disabled NetBIOS over TCP/IP <--------- Not sure if this was required.
I disable all other Network connections like Bluetooth and Wireless while trying to use MS Loopback Adapter but the Local Area Connection 2 Status dialog box says:
IPv4 Connectivity: No Network Access
IPv6 Connectivity: No Network Access
Media State: Enabled
Duration: 00:00:00
Speed: 10 Mbps
Activity:
Packets sent: 31. Received:0
Please help me out here. Thank you!

DBCA again failed during reinstallation of Oracle with the following error messages:
DIM-00019
OS-1053
ORA-12560
INS-20802
The description of these messages are 3 posts above in this thread.
Updated cmd results after reinstallation:
C:\Windows\system32>ping p7one
Pinging P7One [10.10.10.10] with 32 bytes of data:
Reply from 10.10.10.10: bytes=32 time<1ms TTL=128
Reply from 10.10.10.10: bytes=32 time<1ms TTL=128
Reply from 10.10.10.10: bytes=32 time<1ms TTL=128
Reply from 10.10.10.10: bytes=32 time<1ms TTL=128
Ping statistics for 10.10.10.10:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\Windows\system32>lsnrctl start
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 21-MAY-2011 13:24
:27
Copyright (c) 1991, 2010, Oracle. All rights reserved.
TNS-01106: Listener using listener name LISTENER has already been started
C:\Windows\system32>lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 21-MAY-2011 13:24
:46
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Produ
ction
Start Date 21-MAY-2011 13:18:30
Uptime 0 days 0 hr. 6 min. 19 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File D:\app\P7\product\11.2.0\dbhome_1\NETWORK\ADMIN\listen
er.ora
Listener Log File d:\app\p7\diag\tnslsnr\P7One\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)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
C:\Windows\system32>lsnrctl service
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 21-MAY-2011 13:25
:56
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
The command completed successfully
C:\Windows\system32>
Please note that it is still not using 10. address.
C:\Windows\system32>sqlplus
SQL*Plus: Release 11.2.0.1.0 Production on Sat May 21 13:34:41 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Enter user-name: / as sysdba
ERROR:
ORA-12560: TNS:protocol adapter error
Enter user-name:
I believe I have not been able to successfully configure MS Loopback Adapter.
In Control Panel >> Network Connections it is still showing:
Local Area Connection 2
Unidentified Network
Microsoft Loopback Adapter
No Network Access
Edited by: 859535 on May 21, 2011 10:40 AM

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

Loopback Adapter - No Connectivity

I installed a loopback adapter when I installed 10g (I have DHCP).
As of this morning, it say "...limited to no connectivity". I have been unable to repair it. I do have an active internet connection.
My question is: Can I simply remove that current loopback adapter and install another one?.
Thanks.

I cannot believe this...i had the same problem and was able to get beyond the installation of the loopback adapter but was unable to configure the adapter.
I have spent the last 12 hours researching this very problem...i hope with the help of fellow users that we can find the solution of this problem.
Anyhow here is what i have learned so far:
1) you can remove the loopback adapter, the steps are defined in the Oracle Database Installation Guide 10g R2 (B14316-04).
2) In the future you might do what i did...i created a Restore Point (I am using XP Pro) before installing the Loopback Adapter, so when i got stuck i simply executed the restore process and went back to a state before thr change.
This is my first take on this issue...i need to install Standard Edition One 10g
on my xp pro system.
i hope this helps!
talk to you soon!
FITZ

MS Loopback adapter reinstall?

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