TNS NO LISTNER [ORA 12541]

Dear All
When I connect Developer Suite 10g (SQL Plus) With Database 11gr2 it is connected(there is no error).
but when i Enable Network Card(Local Area Connection)
It doest making conection and showing the following error.
ORA12541 TNS: No Listner.
It is working fine with disabling network card. but i want to connect with enabling network card.
Please help me how to solve this issue.
G.Yassen

Ghulam Yassen wrote:
Dear sir Vishwanath
I done as you said
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\YASSEN>lsnrctl
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 15-MAR-2012 09:56:44
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> start
TNS-01106: Listener using listener name LISTENER has already been started
LSNRCTL>
But the probelm still not solved.
Dear as i said earlier database is connected but without enabling local area connection(i.e lan card)
but as i enable lan card it show error TNS no listner.It seems some OS permission issue.
1.)First logon the system as Admin.
2.)Remove the listener using Netmanager
3.)Create listener through netmanager
4.)Check the listener.ora file created or not
and then try to start the listener service
3.)

Similar Messages

No listener ora 12541

Hi,
when i am doing tnsping getting error tns no listener ora 12541
tnsping orcl01
thanks

Hi,
This is not a Berkeley DB issue. You can try one of the other forums, maybe the Database - General forum at:
General Database Discussions
Thanks,
Sandra

ORA-12541 TNS no listner

Hi,
When Oracle forms and reports application is accessed through the web, the logon screen is displayed. When users type in the credentials, we get a ORA-12541 TNS no listner error.
Please guide.
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Thanks

Normally this error means that the listener is not running on the server. Please post the result of
- lsnrctl services (on database server)
- the content of tnsnames.ora and sqlnet.ora (on application server).

TNS: no Listner TNS 12541 when i tnsping orcl

i used tnsping orcl
i get TNS: no Listner TNS 12541
bala

Don't know which platform you are running this, but assume from the path that it is some flavour of UNIX.
Try the following:
ps -ef |grep lsn
If there are any listeners running, then you will get output along the lines of:
oracle 25562 1 0 Feb 14 ? 1227:32 /oracle/product/10.2/bin/tnssnr listener_10_2 -inherit
oracle 25555 1 0 Feb 14 ? 0:05 /oracle/product/10g/bin/tnslsnr listener_10g -inherit
If there are appropriate listeners running, check whether there is a listener entry for the database you are interested in, by running oraenv to set to a database using the correct version of oracle and then run:
lsnrctl status <listener_name>
If the listener is just called LISTENER you can omit the name.
If the database you are interested in is not represented, then it needs to be added.
If there are no listeners running - check the listener config, to see if it has a name other than the default:
run oraenv to set to a database using the correct version of oracle
cd $ORACLE_HOME/network/listener
vi listener.ora.
Check the name of the listener and whether the database you are interested in is included in the file (unless you use the local listener parameter or the default port 1521)
try to start the listener by running
lsnrctl start <listener_name>

Ora-12541 ORA-12154: TNS:could not resolve the connect identifier specified

I am having trouble obtaining an ODBC connection from a client XE to a server XE. ora-12541 ORA-12154: TNS:could not resolve the connect identifier specified
I am new to Oracle.
I have oracle client XE running on my XP pro box.
I have oracle server XE running on an XP pro box on the LAN.
I am trying to connect to the oracle database using ODBC from my client box.
I can logon to the oracle server box through HTTP.
I can logon to the oracle server box by using a connection string in "Command Line SQL" from my client computer. I can then run queries on my client computer. (select * from global_name)
I cannot setup an ODBC connection in windows which will connect to the oracle server box from my client box. (I have no trouble connecting to MSSQL databases).
I can ping my server by hostname or ip address. Both ok.
I can run tnsping XE on the server box and it works. I believe this tells me my server listener is working.
I cannot run tnsping on my client box as it is not included in the download for Client XE.
Windows firewall is turned off on both machines.
I have been reading all over the web for and all attempts fail. Most all help says use Oracle Net Manager or some such tool. They then say go to start\programs\oracle….etc. There is no type program included on the server or the client software. I would like to know here I can download it.
XEClint\Bin is the firs entry in my PATH. The tnsnames.ora, sqlnet.ora, and listner.ora files are there. I have been to http://www.oracle.com/technology/software/products/database/xe/files/install.102/b25143/toc.htm several times. My tnsnames.ora are identical to the ones in the example except for the host =.
I have 3 tnsnames.ora files on my computer:
Directory of c:\
04/03/2008 11:43 AM 635 tnsnames.ORA
Directory of c:\Documents and Settings\All Users\Application Data\Microsoft\Net
work
04/03/2008 11:43 AM 635 tnsnames.ORA
1 File(s) 635 bytes
Directory of c:\XEClient\bin
04/03/2008 11:43 AM 635 tnsnames.ORA
1 File(s) 635 bytes
They are all identical.
When I ran lsnrctl status on the server the results were the same as found in other articles in the web site. Default service XE
I have the Oracle in XE Client driver in my windows ODBC driver list of the client box. And other Oracle drivers.
It appears I am lost.
Any help would be appreciated.
Randy

I cannot setup an ODBC connection in windows which will connect to the oracle server
box from my client box. (I have no trouble connecting to MSSQL databases).How you tryed to do that?
On which step you have problems?

Local Database, TNS Names & ORA-12541: No Listener

I am trying to get IFS working on our new Windows 7 machine and the entire department is scratching it's head right now.
I have gotten Oracle 11.2.0.1 installed and finally being seen by the ODBC thanks to the past threads on the forum mentioning the System Environment Variable. However, now I need to be able to get the program to sync the information that I can pull from "MPRDSP6", the one working ODBC connection right now.
In the past with Oracle XE we had the following in our TNS Names file:
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = COMPUTER.company.local)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
The XE was created whenever Oracle XE was installed and we just added in our MPRDSP6 at the end of the TNS Names file. This was what we used when making the local copy for our personell that would travel and need access to the database.
However, with Oracle 11.2.0.1, there was no TNS Names file whenever it installs and I had to create it --> Inputting our XE entry and the other, MPRDSP6.
Upon trying to 'Test Connection' in the ODBC screen I get:
Unable to Connect
SQLState=S1000
[Oracle][ODBC][Ora] ORA-12541: TNS:no listener
Whenever I try to sync the MPRDSP6 with the local copy of it (named local_db), I am getting an error from the program saying:
Could not find the Local Oracle Data Folder. Please make sure your Local Oracle is running and that you have set the Local Database Creator.
I am assuming this is simply because there is actually no database in existance: it is just in the TNS Names.
I am Running Windows 7 x64
Forgive me if this is a very simple fix as I am completely new to the world of Oracle.
Thanks in advance for any help!

Having the same issue, trying to connect IFS Sales and Marketing. In my case, I am using Oracle Express 10g, Windows 7 32-bit. My ODBC DSN can find the "host" server, but does not seem to find the local Oracle Express instance.

Error ORA-12541:TNS:

oracle error is ORA-12541:TNS: no listener in my persional computer
i think some peple are change my IP address
how can i solve this problem .Plz help me soo ..
Wating you reply
Suman
Message was edited by:
user586129

Hi Hans Forbrich
I am very thank to reply to my ques. dut i have
not solved the prodlem
my port is 1521 what i want to change
Pls tell othere easy process to solved this
porblemYes. There is a very easy process to solve this:
1) open a Windows Explorer, go to the directory (oracle home)\network\admin, copy and paste into the forum the files listener.ora, sqlnet.ora and tnsnames.ora
and
2) open a cmd window, enter command lsnrctl status and ipconfig /all, copy and paste into forum the complete display of this
Exactly the same advice of others, such as madrid, Virag and orafad, who want to help you.

9.2.0.1.0 - OEM - XP home - ORA-12541 TNS: no listener

I have installed 9i (9.2.0.1.0) on Windows XP home edition and can connect to database with SQL Plus but get ORA-12541 TNS: no listener error when I try to connect with OEM. I saw someone else had this problem in Febuary and he sadly got no replies, hopefully someone will be able to help me (us) out.

I guess you now have answers.
1. Check if listener is running
lsnrctl status <listener name>
2. Check port number and SID used
3. Check TNSNAMES for correct Port and SID name
4. Check error details in $HOME/network/log

PL/SQL Debugger and ORA-12541: TNS:no listener

I installed SQL Developer on my PC (Windows XP). I have a connection to my devlopment database on server (Solaris, Oracle 9.2.0.6).
I create a procedure and compile it successfully. Now I want to 'debug' it. I click on the Debugger (ladybug), set my parameter value and click on 'OK' in the Debug PL/SQL window. In the Debugging log I get:
Connecting to the database Banner devl.
Executing PL/SQL: ALTER SESSION SET PLSQL_DEBUG=TRUE
Executing PL/SQL: ALTER SESSION SET PLSQL_COMPILER_FLAGS=INTERPRETED
Executing PL/SQL: CALL DBMS_DEBUG_JDWP.CONNECT_TCP( '130.207.xxx.xxx', '4000' )
ORA-30683: failure establishing connection to debugger
ORA-12541: TNS:no listener
ORA-06512: at "SYS.DBMS_DEBUG_JDWP", line 68
ORA-06512: at line 1
Process exited.
Disconnecting from the database Banner devl.
What listener is it looking for on my own machine? I don't have J Developer and I'm using a remote database.
I found the thread on setting the 'Prompt for Debugger Host for Database Debugging'. Enabled that and tried debugging again. Got the prompt for entering the IP of the Debugger Host. Tried the database server. So I got:
Connecting to the database Banner devl.
Executing PL/SQL: ALTER SESSION SET PLSQL_DEBUG=TRUE
Executing PL/SQL: ALTER SESSION SET PLSQL_COMPILER_FLAGS=INTERPRETED
Executing PL/SQL: CALL DBMS_DEBUG_JDWP.CONNECT_TCP( '130.207.xxx.xxx', '4000' )
ORA-30683: failure establishing connection to debugger
ORA-12541: TNS:no listener
ORA-06512: at "SYS.DBMS_DEBUG_JDWP", line 68
ORA-06512: at line 1
Process exited.
Disconnecting from the database Banner devl.
The answer is probably right in front of me, but I just can't see it. Is something mission on the database server?

I am running SQL Developer on Windows XP Professional and I was experiencing the same problem.
When I started the debugger I got the message from Win XP that Windows Firewall will block some features of the program (being the PC at work I don't have admin privileges on it). I accepted this, not knowing which features would be blocked.
Then, the debugger was just hanging. After a while it timed out and came back with exactly this error message.
I restarted the SQLDeveloper and tried again without much success. This time though I didn't get the Windows Firewall message.
After another few trial and errors I figured out that the Firewall must be blocking connection establishement on the client site i.e. on my PC.
It was the CALL DBMS_DEBUG_JDWP.CONNECT_TCP that was hanging.
As the system admin disabled the Windows Firewall on my PC the debugger started working. We have a luxury to disable local firewalls as there is one that protects our network from outside traffic. People who cannot afford to disable the Windows firewall will have to tinker with the firewall itself and configure it in such a way that it allows traffic on certain port range (4000...4999). Then in SQLdeveloper you will have to go to Tools->Preferences->Debugger and tick Debugging Port Range. The chosen range should match the port range on the Windows Firewall side.
By the way, in the call to CALL DBMS_DEBUG_JDWP.CONNECT_TCP the first parameter is the IP address of your PC and the second one is the port used for debugger connection with the database server. If for some reason the IP address chosen by the debugger is not your IP address (you can find your IP address as follows: Start->Run->cmd; then use command ipconfig), you will have to tick "Prompt for Debugger Host for Database Debugging" on your Debugger Preferences. This way you'll be able to chose the IP address yourself.
Good luck!

DB13c Error:ORA-12541: TNS:no listener for windows systems

Hello Gurus,
We are facing an issue in DB13C jobs.
Background:
DB13c is setup in Solution Manager.
Only for windows systems DB13 jobs are failing.
Job log is given below:
Job started
Step 001 started (program RSDBAJOB, variant &0000000002249, user ID P96ADM)
Execute logical command BRCONNECT On host 10.91.26.117
Parameters:-u / -jid CHECK20120116070805 -sid T72 -j P96 -c -f check
BR0801I BRCONNECT 7.10 (20)
BR0280I BRCONNECT time stamp: 2012-01-16 07.08.09
BR0301W SQL error -12541 at location BrDbConnect-15, SQL statement:
'CONNECT / AT JOURNAL_DB USING P96'
ORA-12541: TNS:no listener
BR0310W Connect to database instance P96 failed
BR0477I Oracle pfile /oracle/T72/102_64/dbs/initT72001.ora created from spfile /oracle/T72/102_64/dbs/spfileT72001.ora
BR0805I Start of BRCONNECT processing: cehrfhfs.chk 2012-01-16 07.08.08
BR0484I BRCONNECT log file: /oracle/T72/sapcheck/cehrfhfs.chk
BR0280I BRCONNECT time stamp: 2012-01-16 07.08.09
BR0301E SQL error -12541 at location db_connect-7, SQL statement:
'CONNECT / AT JOURNAL_DB USING P96'
ORA-12541: TNS:no listener
BR0310E Connect to database instance P96 failed
BR0280I BRCONNECT time stamp: 2012-01-16 07.08.09
BR0301W SQL error -3114 at location brc_dblog_open-3, SQL statement:
'/* AT JOURNAL_DB */ INSERT INTO SAP_SDBAH (BEG, FUNCT, SYSID, OBJ, RC, ENDE, ACTID, LINE) VALUES ('20120116070808', 'chk', 'T72
ORA-03114: not connected to ORACLE
BR0324W Insertion of database log header failed
BR0806I End of BRCONNECT processing: cehrfhfs.chk2012-01-16 07.08.09
BR0280I BRCONNECT time stamp: 2012-01-16 07.08.09
BR0804I BRCONNECT terminated with errors
External program terminated with exit code 3
Internal session terminated with a runtime error (see ST22)
Job cancelled
P96 is our solman(version:SAP EHP 1 for SAP Solution Manager 7.0)
T72 is 4.6c System .
Sap in windows
Database in Linux
Oracle -10.2.0.4
rest all DB13 jobs are running fine.
Only for windows system we are facing issue now.
Runtime Error which comes along with it is:
OBJECTS_OBJREF_NOT_ASSIGNED
Access via 'NULL' object reference not possible.
The current ABAP program "RSDBAJOB" had to be terminated because it has
come across a statement that unfortunately cannot be executed.
lsnrctl status for t72 instance is giving result for another instance(A72 which is teh Acceptance system for T72)
orat72 51> lsnrctl status
LSNRCTL for Linux: Version 10.2.0.4.0 - Production on 16-JAN-2012 07:27:53
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
Alias                     LISTENER_A72_ES1UL0017
Version                   TNSLSNR for Linux: Version 10.2.0.4.0 - Production
Start Date                27-DEC-2011 14:53:43
Uptime                    19 days 16 hr. 34 min. 9 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/A72/102_64/network/admin/listener.ora
Listener Log File         /oracle/A72/102_64/network/log/listener_a72_es1ul0017.log
Kindly provide your valuable suggestions.
Regards,
Samaya

Hello Nicholas,
Thank you for your suggestion.
But i do not think it is really required to change P96 tnsnames.ora.
Because, T72 database is in a Linnux box where several other DB are also there.
(Our landscape,NOn-PRD DB instances are together in 1 linux box)
DB13 jobs of other instances are working fine.
Only difference is T72 sap instace is a windows server where as other instances are in AIX.
In DB13c, windows system is configured as without ABAP server .
                 UNIX systems as With ABAP server.
All were working with this configuration till few days ago.
Thank you.

TNS Error: ORA-12541: TNS: no listener.

I have installed Oracle 9i on machine in Windows XP. When I try to open the database SID in the Enterprise Manager, it gives me TNS Error: ORA-12541: TNS: no listener.
I have checked the Oracle Net Configuration:
Protocol: TCP/IP
Host: PNR18
Port: 1521
In the xp administrative tools, I found that the listener is on start.
When I try to test trough ' Net Configration Assistant' getting same error, similarly with Net Manager.
I don't know if I am using the correct protocol in my case of standalone installation.
Any advice/correction? it would be appreciated. I am giving all the information of TNSNAMES.ORA, LISTENER.ORA, SQLNET.ORA, which is on my machine.
Thanks in advance.
# LISTENER.ORA Network Configuration File: #C:\oracle\ora90\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\ora90)
(PROGRAM = extproc)
# TNSNAMES.ORA Network Configuration File: #C:\oracle\ora90\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
# SQLNET.ORA Network Configuration File:
#C:\oracle\ora90\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)

First of all Thanks for suggestions for solutions but still SAME PROBLEM:
Case-1::
I tried according to your suggestion, still SAME error !! I have also configured new DB
with Enterprise MAnager Configuration Assistent - during DB creation same error occured.
1) I have seen in XP service where all listener is running as well as OracleServiceORCL
is also running.
2) OracleOraHome90TNSListener also running with other listeners!
Case-2::
Dear I also delete listener and create new one and also configured Database Description
and tried to do so but still same problem while I am TESTing it with - Net Manager /
Net Configuration Assistant. I have also tried
C:\TNSPING ORCL - it is giving 'ok' result
but when I am using C:\LSNRCTL START listener - it gives me following errors.
Service OracleOraHome90TNSListener already running.
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 1056: Unknown error
Thats the whole story....hope this time you will find easy to give solution.
All files after your suggestion are as follow:
# TNSNAMES.ORA Network Configuration File: C:\oracle\ora90\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
# LISTENER.ORA Network Configuration File: C:\oracle\ora90\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = C:\oracle\ora90)
(SID_NAME = ORCL)
(SID_DESC =
(PROGRAM = extproc)
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\ora90)
# SQLNET.ORA Network Configuration File: C:\oracle\ora90\NETWORK\ADMIN\sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.PREFERRED_SERVERS =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
SQLNET.AUTHENTICATION_SERVICES= (NTS)

ORA-12541: TNS:no listener after upgrading from 11.1.0.6 to 11.1.0.7

After upgrading from 11.1.0.6 to 11.1.0.7, I get the error: ORA-12541: TNS:no listener.
I have attached my tnsnames.ora, listener.ora and my sqlnet.log.
I have tried deleting the listener and re-adding it and I get the same error.
I have tried adding a new database and it errored at 97% because it couldn’t connect to the listener, but still seemed to create the database.
Any suggestions would be appreciated
My tnsnames.ora file:
# tnsnames.ora Network Configuration File: C:\Oracle\product\11.1.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = tebxjt)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = orcl)
my listener.ora file:
# listener.ora Network Configuration File: C:\Oracle\product\11.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = tebxjt)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
my sqlnet.log:
Fatal NI connect error 12514, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=tebxjt)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orcl)(CID=(PROGRAM=C:\Oracle\product\11.1.0\db_1\jdk\jre\bin\java.exe)(HOST=tebxjt)(USER=739179))))
VERSION INFORMATION:
 TNS for 32-bit Windows: Version 11.1.0.7.0 - Production
 Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 11.1.0.7.0 - Production
Time: 21-JUL-2010 16:53:37
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0

Hi,
What is your ORACLE_SID name of your database. Have you checked in given above output there is two things:
1.
Service "orcl.us.oracle.com" has 1 instance(s).
Instance "orcl", status BLOCKED, has 1 handler(s) for this service...
Service "orcl_XPT.us.oracle.com" has 1 instance(s).
Instance "orcl", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
The status BLOCKED is coming instead of READY
2. From
+"+
+my listener.ora file:+
+# listener.ora Network Configuration File: C:\Oracle\product\11.1.0\db_1\network\admin\listener.ora+
+# Generated by Oracle configuration tools.+
+LISTENER =+
+(DESCRIPTION_LIST =+
+(DESCRIPTION =+
+(ADDRESS = (PROTOCOL = TCP)(HOST = tebxjt)(PORT = 1521))+
+(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))+
+)+
+)+
Here what i feel complete linstner.ora should be have two parts one LISTENER and another SID_LIST_LISTENER :
LISTENER =
(ADDRESS_LIST=
 (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
 (ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY)))
SID_LIST_LISTENER=
(SID_LIST=
 (SID_DESC=
 #BEQUEATH CONFIG
(GLOBAL_DBNAME=salesdb.mycompany)
(SID_NAME=sid1)
(ORACLE_HOME=/private/app/oracle/product/8.0.3)
In your case SID_LIST_LISTENER part is missing.
In this part you have to set SID_NAME and ORACLE_HOME value of new 11g home.
Hope this will help you.
Regards
Rajinder

Another ORA-12541:TNS: No Listener

I have Windows Vista
I install Oracle 10g Enterprise edition on my laptop, then I install the DevSuite 10g and 4 days later i cant connect to TOAD or SQLplus I got the error
ORA-12541:TNS: No Listener
I have 2 folders on my C:// Drive
1.- C:\DevSuiteHome_1\NETWORK\ADMIN\ tnsnames
2.- C:\oracle\product\10.2.0\db_1\network\ADMIN\ Listener + tnsnames.
Can anyone help? I ran already the command:
lsnrctl start
And I got the following message:
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
Can someone help?

KEY_OraDb10g_home1/ORACLE_HOME -- Value:
C:\oracle\product\10.2.0\db_1This path needs to be first (or at least before any other oracle stuff) in the PATH setting.
>
I think Dev Suite have its own database but I´mNope. Not in the Dev Suite home.
trying to connect to the database called ORCL which I
setup with the Enterprise edition 10g .So, is the listener started now?
What do you get from lsnrctl stat?

ORA-12541: TNS:no listener (DBD ERROR: OCIServerAttach) Error in EM

Hi All,
When I try to drop and re-create the EM i am getting the TNS: no Listener error.
The command i issued is : emca -deconfig dbcontrol db -repos drop
Error:
ORA-12541: TNS:no listener (DBD ERROR: OCIServerAttach). Please help me.
From where it picks up the connect information "(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(H
OST=e2k.com)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=E2K.E2K.COM
Here is the log file
CONFIG: SQLEngine created successfully and connected
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.util.PlatformInterface getSortedEnvA
rray
CONFIG: New Env List: [ORACLE_HOME=/u03/app/oracle/product/10.2.0/db_1, ORACLE_S
ID=E2K, PATH=/u03/app/oracle/product/10.2.0/db_1/bin:/usr/sbin:/usr/kerbero
s/bin:/usr/local/bin:/bin:/usr/bin:/home/oracle/bin]
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.util.PlatformInterface executeComman
d
CONFIG: Starting execution: /u03/app/oracle/product/10.2.0/db_1/sysman/admin/emd
rep/bin/RepManager -connect (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(H
OST=e2k.com)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=E2K.E2K.COM
))) -repos_user SYSMAN -action drop -verbose -output_file /u03/ap
p/oracle/product/10.2.0/db_1/cfgtoollogs/emca/E2K/emca_repos_drop_2008-06-2
4_12-32-31-PM.log
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.util.PlatformInterface executeComman
d
CONFIG: Exit value of 50
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.util.PlatformInterface executeComman
d
CONFIG: Enter SYS user's password :
Enter repository user password :
Getting temporary tablespace from database...
Could not connect to SYS/(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST
=e2k.com)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=E2K.E2K.COM
))): ORA-12541: TNS:no listener (DBD ERROR: OCIServerAttach)
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.util.PlatformInterface executeComman
d
CONFIG: stty: standard input: Invalid argument
stty: standard input: Invalid argument
stty: standard input: Invalid argument
stty: standard input: Invalid argument
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.util.PlatformInterface executeComman
d
WARNING: Error executing /u03/app/oracle/product/10.2.0/db_1/sysman/admin/emdrep
/bin/RepManager -connect (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST
=e2k.com)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=E2K.E2K.COM
))) -repos_user SYSMAN -action drop -verbose -output_file /u03/app/o
racle/product/10.2.0/db_1/cfgtoollogs/emca/E2K/emca_repos_drop_2008-06-24_1
2-32-31-PM.log
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.EMReposConfig invoke
SEVERE: Error dropping the repository
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Refer to the log file at /u03/app/oracle/product/10.2.0/db_1/cfgtoollogs/e
mca/E2K/emca_repos_drop_<date>.log for more details.
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.EMConfig perform
SEVERE: Error dropping the repository
Refer to the log file at /u03/app/oracle/product/10.2.0/db_1/cfgtoollogs/emca/E2K/emca_2008-06-24_12-32-11-PM.log for more details.
Jun 24, 2008 12:32:32 PM oracle.sysman.emcp.EMConfig perform
CONFIG: Stack Trace:
oracle.sysman.emcp.exception.EMConfigException: Error dropping the repository
at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:173)
at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:124)
at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:142)
at oracle.sysman.emcp.EMConfigAssistant.invokeEMCA(EMConfigAssistant.jav
a:479)
at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAss
istant.java:1123)
--Thanks

Using a DNS address in tnsnames.ora and a hardcoded IP address in listener.ora or a DNS name not translating to the same IP address the tnsnames.ora DNS translates to, is a known source for ORA-12541.
The listener tries to establish communications to the client, using the IP address it gets from listener.ora or by calling nslookup.
If they don't match: kabloey.
Been there, done that, and a little searching would have helped you out.
This discussion forum is turning more and more into a Q&A forum for redundant answers on redundant questions, asked by people who can not be bothered to use existing resources.
Sybrand Bakker
Senior Oracle DBA

Cannot config EM from dbca with ORA-12541: TNS:no listener

Hi all,
I am having a strange issue with Oracle Database. I have "Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production" running on a windows 7 system. Everything seems working: I can connect and do SQL operations. But my EM is not running. I need to do a re-config by running dbca. I choose to "configure database options" etc for the existing database, roughly at the 67%, it stopped. In log, I see the following exceptions:
Jul 7, 2012 11:12:49 PM oracle.sysman.emcp.ParamsManager checkListenerStatusForDBControl
CONFIG: ORA-12541: TNS:no listener
oracle.sysman.assistants.util.sqlEngine.SQLFatalErrorException: ORA-12541: TNS:no listener
oracle.sysman.emcp.exception.EMConfigException: Listener is not up or database service is not registered with it. Start the Listener and register database service and run EM Configuration Assistant again .
However, my listener seems working (otherwise, my sqlplus connections wouldn't work, correct?). Please see the attached information. Can anyone please tell me what I am doing wrong here and how to fix it? Thank you all very much!
$ lsnrctl service
LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 07-JUL-2012 21:54:12
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
Service "orcl" has 2 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:27 refused:0
LOCAL SERVER
Instance "orcl", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1 refused:0 state:ready
LOCAL SERVER
The command completed successfully
I can also connect
$ sqlplus sys/*****@orcl as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sat Jul 7 23:11:30 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
I can also do:
$ tnsping orcl
TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 07-JUL-2012 23:12:53
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\oracle\product\11.2.0\dbhome_2\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
OK (40 msec)

Can you please tell me what options I need to run emca? My current database is accessible and seems running fine except this EM issue.
dbca can also "configure database options" existing DB's, at least I should not get that error in "C:\oracle\cfgtoollogs\dbca\orcl\emConfig.log" that says
Jul 7, 2012 11:12:49 PM oracle.sysman.emcp.ParamsManager checkListenerStatusForDBControl
CONFIG: ORA-12541: TNS:no listener
oracle.sysman.assistants.util.sqlEngine.SQLFatalErrorException: ORA-12541: TNS:no listener
Jul 7, 2012 11:12:49 PM oracle.sysman.emcp.EMConfig perform
SEVERE: Listener is not up or database service is not registered with it. Start the Listener and register database service and run EM Configuration Assistant again .
Refer to the log file at C:\oracle\cfgtoollogs\dbca\orcl\emConfig.log for more details.
Jul 7, 2012 11:12:49 PM oracle.sysman.emcp.EMConfig perform
CONFIG: Stack Trace:
oracle.sysman.emcp.exception.EMConfigException: Listener is not up or database service is not registered with it. Start the Listener and register database service and run EM Configuration Assistant again .

TNS NO LISTNER [ORA 12541]

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