ORA-12541: TNS:no listener
If the listener is running correctly, make sure that the connect information provided (hostname, portnumber) matches with the information in the listener.ora file or the local_listener database parameter.
If you do not know the host and port information of a given connection string, you can use the tnsping command line tool to get this information:
C:>tnsping ORA920 TNS Ping Utility for 32-bit Windows: Version 9.2.0.7.0 - Production Copyright (c) 1997 Oracle Corporation. All rights reserved. Used parameter files: c:\oracle\ora920\network\admin\sqlnet.ora Used TNSNAMES adapter to resolve the alias Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = DEV01)(PORT = 2491))) (CONNECT_DATA = (SERVICE_NAME = ORA920.EU.DBMOTIVE.COM) (SERVER = DEDICATED))) OK (200 msec)
Using the host (DEV01) and port (2491) information, goto the server identified by HOST.
Open a shell or command prompt, and check if there is a process listening on the port identified by PORT.
c:>netstat -a ... TCP DEV01:2491 DEV01.eu.dbmotive.com:0 LISTENING ...
Welcome to our forum for Oracle error: ORA-12541 Add your own message
I have a problem in my computing project that when I try to make a connection to oracle database with ADO the error 'ORA-12541 problem' appear to me
HELP ME PLEASE
THANKS
HELP ME PLEASE
THANKS
The listener you are connecting to is not running.
Either this is a misconfiguration in your tnsnames.ora (incorrect port) or the service is not running.
Either this is a misconfiguration in your tnsnames.ora (incorrect port) or the service is not running.
I want to stratup an EM on linux using the following command:
[oracle@dbserver bin]$./emctl start dbconsole
but it give the following error:
OC4J Configuration issue. /u01/app/oracle/product/10.1.0/db_1/oc4j/j2ee/OC4J_DBConsole_dbserver.iscob.com_ICOB000 not found.
[oracle@dbserver bin]$./emctl start dbconsole
but it give the following error:
OC4J Configuration issue. /u01/app/oracle/product/10.1.0/db_1/oc4j/j2ee/OC4J_DBConsole_dbserver.iscob.com_ICOB000 not found.
Upon starting the central instance. Dispatcher turns gray with all work processes killed. Each work processes has an ora-12541 in their dev traces. As a resolution, I updated TNS_ADMIN in the registry and the TNS_ADMIN in the environment variable with the actual path where tnsnames.ora is located. After that, I followed the instruction given above and checked the PORT if it is in the list after running netstat -a in the command prompt. After that, I was then able to start the central instance with error.
when i try access an oracle database through Oracle Developer i get the following error!
ORA-12541:Message 12541 not found:Product=RDBMS80;facility=ORA.
I created a listener and a service name,i copied the tnsnames.ora file to the Admin folder but it still gives the same error.
what wold be the problem?
ORA-12541:Message 12541 not found:Product=RDBMS80;facility=ORA.
I created a listener and a service name,i copied the tnsnames.ora file to the Admin folder but it still gives the same error.
what wold be the problem?
After you have created the listener, did you start it?
lsnrctl start
The OracleHome92TNSListener service on Local Computer started and then Stopped. Some services
stop automatically if they have no work to do, for example, the performance Logs and Alerts service
stop automatically if they have no work to do, for example, the performance Logs and Alerts service
i want to replace this service OracleHome92TNSListener service to 10g service
1) First copy over the listener.ora to the new Oracle home
2) Remove the old listener in the Oracel 9.2 Oracle home
You can use our free product 'Oracle Listener Remover' for that.
3) Recreate (restart) the listener using the new 10g Oracle home
2) Remove the old listener in the Oracel 9.2 Oracle home
You can use our free product 'Oracle Listener Remover' for that.
3) Recreate (restart) the listener using the new 10g Oracle home
I am facing the ORA 12541 problem, but it surely is not a problem with the listener as similar installation works on other PCs
Also, I tried pinging and found the IP address assumed is proper, what other things could have caused this?
Is it possible that the problem is an issue with Firewall...I have the same Windows Firewall and McAfee installed on the PC where the connection works
Also, I tried pinging and found the IP address assumed is proper, what other things could have caused this?
Is it possible that the problem is an issue with Firewall...I have the same Windows Firewall and McAfee installed on the PC where the connection works
If everything is configured correctly at the server side, you will have to check your firewall settings and/or log on the client side.
One thing you can do is to try to telnet to the listener port on the server:
One thing you can do is to try to telnet to the listener port on the server:
telnet your_server 1521
I'm not able to run my SQL Plus application in my Windows XP SP2 platform. kindly help me on this issue & it will be grateful from anyone...
Can you please post the output of following commands:
tnsping
netstat -a
tnsping
netstat -a
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