Oracle Connection Error Ora-12541
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ORA-12541: TNS: ora-12541 tns no listener 11g no listener Oracle Tips by John Garmany You Asked: I get the ORA-12541 error message when I try to connectOra-12541 Tns No Listener Toad
through Forms6i and Reports6i Builder. I've started the listener also. I have no problems accessing the database through SQL*Plus. I've checked the listener.ora and tnsnames.ora files and everything seems okay. We Said: From
Ora-12541: Tns:no Listener Linux
the docs: ORA-12541: TNS no listener Cause: Listener for the source repository has not been started. Action: Start the Listener on the machine where the source repository resides. Basically the Forms server could not find the listener. First check the tnsnames.ora file and ensure that it points to the correct server and port. If the Forms server is on another machine, test the TNS resolve ora 12541 tns no listener oracle 11g client with tnsping from the command prompt. Finally, check the listener. First, ensure that your listener service is running. C:\Documents and Settings\ME>lsnrctl stat This should show the status of the listener and the services it is listening for. Remember that when you run SQL*Plus on the database server, it does not need the listener to connect unless you specify the database tnsnames.ora entry.Try to start the listener service using lsnrctl from DOS prompt. set ORACLE_HOME= cd %ORACLE_HOME%/bin lsnrctl start LISTENER If the listener service is not running, re-start the listener service using the Windows task manager or use the DOS command line utility to re-start the Windows service with the "net start" command: C:\Documents and Settings\ME>net start OracleOraDb10g_home1TNSListener You can use the lsnrctl status command to verify that the listener is down, and lsnrctl start to start your listener. If you are on Windows, also verify that the listener service is running. Here are more notes on lsnrctl: Oracle listener lsnrctl command Oracle listener lsnrctl command Oracle listener security tips Blocking Oracle access by IP Addresses ��
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Tns No Listener Error In Oracle 11g
and reload this page. Please enter a title. You can not tns-12560: tns:protocol adapter error post a blank message. Please type your message and try again. More discussions in General Database Discussions ora-12514 tns no listener All PlacesDatabaseGeneral Database Discussions This discussion is archived 14 Replies Latest reply on Mar 7, 2011 6:41 PM by 839770 ORA-12541- TNS:No Listener Error 839770 Mar 7, http://www.dba-oracle.com/t_ora_12541_tns_no_listener.htm 2011 7:59 AM Dear All, I am new to oracle and this forum. I installed Oracle 11g and Oracle forms in my system. When i Try to connect to database thru SQL* Plus, am getting error as "ORA-12541- TNS:No Listener". Same issue when i try to connect thru Forms Builder. This is how my tnsnames.ora looks https://community.oracle.com/thread/2188674 # tnsnames.ora Network Configuration File: C:\DevSuiteHome_2\network\admin\tnsnames.ora # Generated by Oracle configuration tools. EXTPROC_CONNECTION_DATA = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = Pradeep-PC)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = PLSExtProc) ) ) ORACLE = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = oracle) ) ) LISTENER_ORACLE = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) ORACLR_CONNECTION_DATA = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC)) ) (CONNECT_DATA = (SID = CLRExtProc) (PRESENTATION = RO) ) ) Kindly guide me I have the same question Show 0 Likes(0) 20444Views Tags: none (add) ora-12541Content tagged with ora-12541 This content has been marked as final. Show 14 replies 1. Re: ORA-12541- TNS:No Listener Error Kamran Agayev A. Mar 7, 2011 8:22 AM (in response to 839770) Please post the output of the following command from db server : lsnrctl statusIf it's down, then run lsnrctl startand post all output K
example inside Event Log http://www.ibm.com/support/docview.wss?uid=swg21361712 Technote (troubleshooting) Problem(Abstract) User tries to launch Controller. User receives error message on screen. If they look at their client PC's http://kb.tableau.com/articles/knowledgebase/oracle-connection 'application' Event Log, there is an entry there, corresponding with the time when they tried to logon. On the Controller application no listener server, there are periodic VBRUNTIME errors. Symptom Client PC screen: An error occurred while trying to access the server Client PC Event Log: Event Type: WarningEvent Source: Cognos ControllerEvent Category: NoneEvent ID: 0Date: 1/31/2008Time: 10:20:10 AMUser: N/AComputer: PCNAMEDescription:Error occured at 1/31/2008 10:20:10 tns no listener AM in Cognos Controller, Error No=5, Source=FrangoDirect.ServerInfoD.GetServerInfo#ControllerProxyClient, Description=System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Runtime.InteropServices.COMException (0x80004005): ORA-12541: TNS:no listener at FrServerB.ServerInfoClass.GetServerInfo(String sGuid, String sUser) at Cognos.Controller.Proxy.CCRWS.ServerInfo_GetServerInfo(String sGuid, String sUser) --- End of inner exception stack trace ---, HelpFile= HelpContext=0 Application Server Event Log: Event Type: Warning Event Source: VBRuntime Event Category: None Event ID: 1 Date: 1/31/2008 Time: 10:08:02 AM User: N/A Computer: SERVERNAME Description: The VB Application identified by the event source logged this Application FrSrvFunc: Thread ID: 3424 ,Logged: Error occured at 1/31/2008 10:08:02 AM in FrSrvFunc, Error No=-2147467259, Source=Server function:Db_CreateConnection(..) , Description= ORA-12541: TNS:no listener, HelpFile= HelpContext=0 And: Event Type: Error Event Source: VBRuntime Event Category: None Event ID: 1 Date: 1/31/2008 Time: 10:08:02 AM User: N/A Computer: SERVERNAME De
connection methods and naming conventions. There are several common errors received when the Oracle drivers do not have the necessary route or naming syntax. The common Oracle errors seen with Tableau data connections are: ORA-12154: TNS: could not resolve the connect identifier specified ORA-12514: TNS listener does not currently know of service requested in connect descriptor ORA-12541: TNS: no listener ORA-12170: TNS:Connect timeout occurred ORA-12504: TNS listener was not given the SERVICE_NAME in CONNECT_DATA The best way to correct or avoid these errors is to set up a connection to use TNSNames.ora. If after setting up this connection, you are still having connection problems, see the Troubleshooting Oracle Connection Errors article. Note: This article applies to Windows. For an equivalent article for the Mac platform, see Setting an Oracle Connection to Use TNSNames.ora or LDAP.ora on a Mac. Verify a TNSNames.ora file exists on the machine The TNSNames.ora file contains the specific information required to connect to the Oracle instance. By default, the TNSNames.ora file resides in {oracle home directory}\network\admin. For example, C:\Oracle_Client\network\admin. If a TNSNames.ora file does not exist on the machine, you will need to create one in a text editor. We recommend storing the file in your My Documents folder as this is an easily identified folder and common on most machines. For example: C:\Users\jsmith\Documents. Below is a potential template for an entry. Elements in brackets must be replaced by values obtained from your database administrator. [net_service_name]=(DESCRIPTION= (ADDRESS=[protocol_address_information]) (CONNECT_DATA= (SERVICE_NAME=[service_name]) ) ) Below is an example entry that uses the template above:Production = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = prod.corp.com)(PORT = 1521) ) (CONNECT_DATA = (SERVICE_NAME= orcl) ) ) Set the TNS_Admin environment variable Create a Windows Environment variable that directs Oracle connections to use the information in the TNSNames.ora file. Then you can use the Oracle Net Service Names in Tableau data connections without needing to know the port, service, or SID specifics for each Oracle connection. Note: If you do not have an Oracle client installed