Error message "12541" TNS-no listener

I have Oracle 10g version 10.1 installed on Windows XP Professional and am trying to open up forms builder, but I keep getting this message. Can anyone tell me what I need to do?

This is all the information asked for, but I noticed there is no LISTENER.ORA in the network file, so that may be the problem. How can I correct it?
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Thomasene>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : anthony-ywpqhfe
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : houston.rr.com
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast Ethe
rnet NIC
Physical Address. . . . . . . . . : 00-E0-B8-70-CC-98
Ethernet adapter Wireless Network Connection:
Connection-specific DNS Suffix . : houston.rr.com
Description . . . . . . . . . . . : Wireless-G Notebook Adapter WPC54G V
3
Physical Address. . . . . . . . . : 00-16-B6-D2-A1-A1
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.103
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 24.93.41.125
24.93.41.126
Lease Obtained. . . . . . . . . . : Tuesday, June 05, 2007 5:43:45 PM
Lease Expires . . . . . . . . . . : Wednesday, June 06, 2007 5:43:45 PM
C:\Documents and Settings\Thomasene>lsnrctl stat
LSNRCTL for 32-bit Windows: Version 10.1.0.2.0 - Production on 05-JUN-2007 20:26
:43
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
32-bit Windows Error: 2: No such file or directory
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.100)(PORT=1521
TNS-12535: TNS:operation timed out
TNS-12560: TNS:protocol adapter error
TNS-00505: Operation timed out
32-bit Windows Error: 60: Unknown error
# tnsnames.ora Network Configuration File: C:\oracle\oradev\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = anthony-ywpqhfe)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = orcl1)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.103)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = PLSExtProc)
sqlnet.ora Network Configuration File: C:\oracle\oradev\network\admin\sqlnet.ora
Generated by Oracle configuration tools.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (LDAP, TNSNAMES, EZCONNECT, ONAMES, HOSTNAME)
DEFAULT_SDU_SIZE = 8761

Similar Messages

ORA-23324: error ORA-12541: TNS:no listener, while creating deferror entry

I need Help for the following error message while pushing the dererred transactions from the snapshot to Master in advanced replication.
The Snapshot site has some deftran which supposed to propagate daily push.
SQL>
SQL> -- push existing transactions
SQL> declare
rc binary_integer;
begin
rc := dbms_defer_sys.push('XXXX.WORLD');
dbms_output.put_line(to_char(rc));
end;
declare
ERROR at line 1:
ORA-23324: error ORA-12541: TNS:no listener, while creating deferror entry at
"XXXX.WORLD" with error -12541
ORA-06512: at "SYS.DBMS_DEFER_SYS", line 1716
ORA-06512: at "SYS.DBMS_DEFER_SYS", line 1804
ORA-06512: at line 4
Thank you in advance.

The Listener in SNAPSHOT server and the MASTER server - started
I can do the same from different country of the other server with the same tnsname works.
But only this perticular site have issues since Oct 27, 2011 onwards. The last successful replication from that snapshot site to master is on Oct 27, 2011.
I can connect to the SNAPSHOT Site and from there i can connect to the master using any profile to the master.
But only when i replicate from the snapshot site using the script then i am getting this 12541 no listener error
Please help.
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)

Error: ORA-12541 : TNS: No Listener

Hi
i got a error when i am connecting to the database
I am in Oracle 1.7.
Error: ORA-12541 : TNS: No Listener
Please say me the solution
Farhad

HI
BUT IF I DONT USE THE DATABASE NAME, IN THAT TIME IT CAN EASILY GOES TO THE DATABASE
i COULD NOT FIND THE TNS LISTENER AND DOES NOT KNOW HOW TO START THE SERVER
FARHAD

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.

SQLPLUS error::ORA-12541: TNS: no listener

I am new so bare with me...
I believe I have successfully installed 8.1.6 on RH-6.1..
But when I type SQLPLUS at the command line I am promted for a username:
I type scott/tiger@SID
and get the TNS no listner error..
I have also tried various other user id's and passwds:.
scott/[email protected]
oracle/passwd@sid
ETC.. Nothing just errors
I am really looking for help or links to help..
I so much want this to work....
Thanks and feel free to email me your comments...[email protected]
null

<BLOCKQUOTE>quote:<HR>Originally posted by Karana:
I am new so bare with me...
I believe I have successfully installed 8.1.6 on RH-6.1..
But when I type SQLPLUS at the command line I am promted for a username:
I type scott/tiger@SID
and get the TNS no listner error..
I have also tried various other user id's and passwds:.
scott/[email protected]
oracle/passwd@sid
<snip> ped
<HR></BLOCKQUOTE>
i think you want to connect to a databaseServer on the local host.
set the ORACLE_SID variable with the command
export ORACLE_SID=<here_the_name_of your_database>
with bash shell.
then start sqlplus with
sqlplus system
and type the password at the following prompt. default password for system is
manager
better not use the user/password cmdline,
cause other users on this system can see your password in the processList (ps ax).
create a demo user, i found no user scott after installing.
have fun
null

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

I installed 9i on Win98. When I go to run 9i Navigator to connect to local database, or run SQL*Plus to connect the above error is returned
Thanks in advance for your help !
Joey C. :-)

I'm assuming that you chose to install the database & client, not just the client. If you chose only to install the client components, there won't be a database to connect to.
If you look at the list of services running on your machine via the Control Panel, you should see something along the lines of a "database listner" service. I don't recall the exact terminology at the moment. Make sure that this service is "Running".
Justin

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

ORA-12541: TNS:no listener error from client mechine

We have oracle 11g server from onsite and I am trying to connect from offshore client.But I am getting error
From SQL plus i am getting the error,
ORA-12541: TNS:no listener
and from SQL Developer I am getting the error,
IO Error:The network adapter could not establish the connection
I am able to Telnet the host with proper port.Onsite peoples able to connect the database from any client using the same TNS names configration I am using.
What are the possibilities to get this errors ?
Please guide me on this.

sadasivam wrote:
Hi
Thanks for reply.I checked with onsite DBA for listener and it is up.If you have an on-site DBA why aren't you working with him to solve the problem?
Since you assert that other client machines are able to connect to the database, the issue must be with your own setup. I strongly suspect your tnsnames has a bad entry. Please compare it to the same file from a working client. Also, show us the contents of your tnsnames.ora file.
>
I dont have access of disable the firewall in my clent mechine.I will get it done by network team and post you the status.

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?

TNS-12541: TNS: no listener (has to input user name)

Hi!
I have installed Oracle10g successful. I have tested the connection in Net Manager and is successful in condition that I change the user name to system. How can I preset the user name, so that the system will not prompt me for input when I sqlplus?
Enclosed please find the output:
C:\>tnsping train
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 -
Production on 21-9月 -2005 12:10:04
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
Used EZCONNECT adapter to resolve the alias
Attempting to contact (DESCRIPTION=
(CONNECT_DATA=
(SERVICE_NAME=train.plusten.com.cn))(ADDRESS=
(PROTOCOL=TCP)(HOST=210.245.166.72)
(PORT=1521)))
TNS-12541: TNS:no listener
C:\>sqlplus system/manager@train
SQL*Plus: Release 10.2.0.1.0 - Production on 星期三 9
月 21 12:14:16 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12541: TNS:no listener
Enter user-name:system //will prompt for user name and password
Enter password:
Connected to:
Oracle Database 10g Release 10.2.0.1.0 - Production
SQL> exit
Disconnected from Oracle Database 10g Release
10.2.0.1.0 - Production
C:\oracle\product\10.2.0\db_1\BIN>lsnrctl status
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 21-9月 -2005 16:43:31
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production
Start Date 21-9月 -2005 15:01:50
Uptime 0 days 1 hr. 41 min. 41 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
Listener Log File C:\oracle\product\10.2.0\db_1\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=orange.plusten.com.cn)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "train.plusten.com.cn" has 1 instance(s).
Instance "train", status READY, has 1 handler(s) for this service...
Service "trainXDB.plusten.com.cn" has 1 instance(s).
Instance "train", status READY, has 1 handler(s) for this service...
Service "train_XPT.plusten.com.cn" has 1 instance(s).
Instance "train", status READY, has 1 handler(s) for this service...
The command completed successfully

I am sorry. I am newbie in Oracle and still do not know how to solve it. Even I try sqlplus system/[email protected], the outcome is still the same. Enclosed pleae find my sqlnet.ora, listener.ora and tnsnames.ora files:
# sqlnet.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\sqlnet.ora
# Generated by Oracle configuration tools.
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
NAMES.DEFAULT_DOMAIN = plusten.com.cn
# listener.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = ORANGE)(PORT = 1521))
# tnsnames.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
TRAIN =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ORANGE)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = train.plusten.com.cn)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)

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

ORA-12541: TNS:no listener on my VISTA

Hi guys,
I've installed Oracle 10g on my Windows Vista laptop and it says Successful but upon connecting to Database using TOAD or SQL plus an error ORA-12541: TNS:no listener. What seems to be the problem here. I've search the forums and try all the advices but to no avail.? I run the lsnrctl start / in the command prompt but it seems that lsnrctl command is not recognize as an internal or external command. by the DOS. I also checked the Services to determine if the OracleServices is running but I cant find any Service with Oracle name. Ive reinstalled twice but unfortunately same things happen. Kindly advice.
Thank you
Jay
Edited by: LORDJAY on Oct 9, 2008 10:33 PM

Sybrand and Zack: Thanks for pointing me to the log. I was able to see that the problem computer had a Windows Computer Name mismatch. And also, its "Microsoft Loopback Adapter" network connection had been disabled. While I could have tried enabling the MLA, I chose to set the "HOST = " value in the listener.log file in the %ORACLE_HOME%\network\ADMIN\ path to match the Windows Computer Name. Once I changed that, I was able to start the Listener.
...and now, I need to address the issue of Vista versions:
If you guys would look up the Microsoft Windows Vista: Compare editions page, you would see that the differences are just frosting on the cake. Things like "Aero Desktop", "Tablet PC Support", "Windows Meeting Space", some backup/restore options and more games (Yeah I really want InkBall and Chess Titans!). Otherwise, Vista is running the same engine under the hood.
I have no clue why Oracle has chosen to certify only a specific Vista version. It appears they have fallen for a Microsoft marketing ploy: give people a choice of levels, and human nature is to always reach for the more expensive one.
A few years ago, when Oracle was proudly bragging about their robustness and the "Write once, Run anywhere" theme, they would have certified their software on all Vista versions. Given Larry's distaste for competition with Microsoft, it would seem like he would have urged Marketing to aim for the leanest Vista version. But then maybe Marketing decided that having software that ran on the cheapest Vista version would look cheap. Or maybe they are looking for ways to cut back on costs -- it is less expensive to say you support Vista and then tell some of the people seeking help that they have the wrong version, rather than spend the time helping them work through the problem.
No matter what Oracle's reason, I still say you guys parroting the same line as Oracle are doing a disservice to people looking for help on the forum.
The answers given so far were perfectly valid, because this is the
answer you will get from Oracle Support. They will not help the OP. Nor
will they help you when your database on Vista Home crashes.Sounds like my mother telling me to put on a coat before I go out to play. "You'll be sorry when you catch a cold!"
Sorry, but Oracle is the LAST place I would go for help. Multiple times, I have presented issues to Oracle, and the person at the other end either could not comprehend the problem, or maintained that what I was seeing was the same as another bug... It is my experience that they go to the greatest lengths possible to maintain that there is nothing wrong at their end. The result is that it is up to me to find a workaround.
Not certified means not certified. It might work, and then it might not
work. You have just been lucky.Right. I work on software day in and day out that has been uncertified by Oracle, but still runs fine -- in production. And on the other side of the coin, have published steps to get software to run on platforms not yet certified by Oracle.
People are providing this answer here, because no one can provide more
support than Oracle Support actually does.Why do you write such stuff? Every time I encounter this Re: Sarcasm and negative comments, it gets me going.

ORA-12541: TNS:no listener Error When connected to net....

I am using internet via mobile on my pc. Whenever I am connected to the net I can't run the following code from Visual studio.
It shows the following error:
OleDbException was unhandled
ORA-12541: TNS:no listener
I have no idea about it.please help!!
***************************Code Section*****************
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;
using Oracle.DataAccess.Client;
namespace gridques
public partial class Form1 : Form
OleDbConnection newConnection;
public Form1()
InitializeComponent();
private void Form1_Load(object sender, EventArgs e)
newConnection = new OleDbConnection("Provider=MSDAORA.1;Data Source=orcl;User ID=project;Password=project");
newConnection.Open();//////********IT SHOWS THE ERROR HERE*************
private void show_Click(object sender, EventArgs e)
OleDbCommand resultsCommand = null;
OleDbDataAdapter resultsAdapter = new OleDbDataAdapter();
DataTable resultsTable = new DataTable();
try
// establish command object and data adapter
resultsCommand = new OleDbCommand("select * from stock order by serialNo", newConnection);
resultsAdapter.SelectCommand = resultsCommand;
resultsAdapter.Fill(resultsTable);
dataGridView1.DataSource = resultsTable;
catch (Exception ex)
MessageBox.Show(ex.Message, "Error in Processing SQL", MessageBoxButtons.OK, MessageBoxIcon.Error);
resultsCommand.Dispose();
resultsAdapter.Dispose();
resultsTable.Dispose();
}

Hi,
ORA-12541: TNS:no listener
Many reason but first thing need to check is "Is your listener is up and running on the server"
lsnrctl statusregards,
Taj

TNS-12541 TNS: No Listener error HELP!!!

Hello,
We have installed Oracle 8.0.5 on Windows 2000.
Oracle was well installed (no errors) but sometimes we can connect to the database (via SQL+ or by a tnsping on the client), sometimes we cannot and it shows above message (TNS-12541 TNS: No Listener). That is very strange: the listener do really exist and is running. (Service is started). I tried to stop and start manually the listener (tnslnr80) but the 'start' failed (it was too long so I killed the command).
Can someone help us to solve this or to understand what happens?
Thx a lot
Nivotiana

Mohammed ... wrote:
Thanks all your help and support..
I reconfigured the instant client following below link :
[http://www.dbatoolz.com/t/installing-oracle-instantclient-basic-and-instantclient-sqlplus-on-win32.html]
and followed your advises as well and i can now connect to database though any user
But unfortunately, i cannot connect as sys user, it gave me below error :
C:\Users\mohammed>sqlplus sys as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Tue May 7 17:29:56 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Enter password:
ERROR:
ORA-12560: TNS:protocol adapter error
C:\Users\mohammed>
Could you please advise..
Regards,
MohammedIf the client is on the same machine as the database, then you don't have ORACLE_SID set.
More likely the database is on a different server, you have to specify 'sqlplus sys/pswd@dbname'.
And your db will need to be configured to allow remote sysdba authorization, which is not a good idea from a security perspective.

Error message "12541" TNS-no listener

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