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?

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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:
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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.

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):
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===========================================================
After did some searching, I find I may need to install MS loopback adapter.
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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 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
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so , i wrote
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Please tell what exactly to write in that host file ?
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bootstrap wrote:
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Yes
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Start Date 28-NOV-2010 08:37:44
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The command completed successfully
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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.

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Madrid,
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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
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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
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OS-1053
ORA-12560
INS-20802
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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),
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LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 21-MAY-2011 13:24
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Copyright (c) 1991, 2010, Oracle. All rights reserved.
TNS-01106: Listener using listener name LISTENER has already been started
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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)))
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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
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Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
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Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
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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

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.
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Why Microsoft Loopback Adapter in SAP Installation ?

Hello Gurus
Please Tell Me The Concept of Microsoft Loopback Adapter ?
Why we are using this when we install SAP ?
Please Suggest Any Hyperlink Or Document Where we are going to Get The Information on This
Thank You

Hi Srinivas,
If loopback adapter is not installed on your system then it not able to go inside the \\<hostname>\sapmnt or saploc directory.
Moreover SAP engine requires a LAN adapter to function properly and since sapmnt is shared folder it will get accessed while network is available.
Check the below link
http://www.stechno.net/sap-notes.html?view=sapnote&id=698014
With Regards
Ashutosh Chaturvedi

Do i really need to install Microsoft Loopback Adapter ?

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