Ora No Listener Error
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ora 12541 tns no listener toad ORA-12541: TNS: no listener Oracle Tips by John Garmany You Asked: I get the ora-12514 tns no listener ORA-12541 error message when I try to connect through Forms6i and Reports6i Builder. I've started the listener also. I have no problems accessing the database through SQL*Plus. I've checked theOra-12541: Tns:no Listener Linux
listener.ora and tnsnames.ora files and everything seems okay. We Said: From 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 ora 12541 tns no listener oracle 11g client correct server and port. If the Forms server is on another machine, test the TNS resolve 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 Oracl
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Tns-12541: Tns:no Listener Linux
with us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish http://www.dba-oracle.com/t_ora_12541_tns_no_listener.htm to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top ORA-12541: TNS:no listener up vote 3 down vote favorite 1 I've been http://dba.stackexchange.com/questions/73944/ora-12541-tnsno-listener working this issue all day, reading posts here and other locations. I'm just not able to get past this error. I can connect just fine locally on my server (CentOS), but continue to get the TNS:no listener error when trying to connect via my Mac (OSX Mavericks) which is on the same subnet. Below are some notes I've captured based on what information I see that has been requested for this type of issue: -------------------------------------------------------------------------------- MISC NETWORK CONFIG: -------------------------------------------------------------------------------- [root@rubyrailssvr ~]# more /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.14 rubyrailssvr.homenet.com [root@rubyrailssvr ~]# [root@rubyrailssvr ~]# more /etc/sysconfig/network NETWORKING=yes HOSTNAME=rubyrailssvr.homenet.com [root@rubyrailssvr ~]# -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- LISTENER.ORA File: -------------------------------------------------------------------------------- [oracle@rubyrailssvr ~]$ more /u01/app/oracle/product/11.2.0/xe/network/admin/listener.ora # listener.ora Network Configuration File: SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = PLSExtProc) (ORACLE_HOME = /u01/app/oracle/product/11.2.0/xe) (PROGRAM = extproc) ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.14)(PORT = 1521)) ) ) DEFAULT_SERVICE_LISTENER = (XE) [oracle@rubyrailssvr ~]$ ------------------------
example inside Event Log Technote (troubleshooting) Problem(Abstract) http://www.ibm.com/support/docview.wss?uid=swg21361712 User tries to launch Controller. User receives error message on screen. If they look at their client PC's 'application' Event Log, there is http://kb.mit.edu/confluence/pages/viewpage.action?pageId=3902716 an entry there, corresponding with the time when they tried to logon. On the Controller application server, there are periodic VBRUNTIME errors. no listener 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 AM in Cognos Controller, Error No=5, Source=FrangoDirect.ServerInfoD.GetServerInfo#ControllerProxyClient, Description=System.Web.Services.Protocols.SoapException: Server was tns no listener 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 Description: The VB Application identified by the event source logged this Application FrSrvFunc: Thread ID: 3424 ,Logged: Connection Error: Udl=File Name
view Printable view Export to Adobe Acrobat (PDF) Export to Microsoft Word Email this page Other pagesHome page Dashboard News Recent updates RSS feed builder Index Site map Labels Attachments index People Directory AccountLog in History History "ORA-12541 TNS no listener", Oracle error message Question I'm trying to log in to BrioQuery, or to another application that requires Oracle and am getting the error message: ORA-12541: TNS:no listener How can I resolve this? Context An ORA-12541 error occurs when the listener for the destination server is down or unreachable. This can be due to the listener not being started or being incorrectly configured, or it can be due to a network connection problem. Solution Two likely reasons for the error: the database was briefly unavailable at the time when you tried to access. the Oracle client application on your machine is not configured correctly. See: "TNS could not resolve connect identifier specified", "...could not resolve service name" IS&T Contributions Documentation and information provided by IS&T staff members → Short URL for sharing"ORA-12541 TNS no lis...http://kb.mit.edu/confluence/x/-Iw7 Last Modified:February 22, 2012 Get Help Request helpfrom the Help Desk Report a security incidentto the Security Team Labels parameters Labels: None c-oracle c-oracle Delete Enter labels to add to this page: Looking for a label? Just start typing. Feedback This product/service is: Thank you for your feedback. If you would like to provide more details, please log in and add a comment below. Easy to use Average Difficult to use This article is: Thank you for your feedback. If you would like to provide more details, please log in and add a comment below. Helpful Inaccurate Obsolete Adaptavist Theme Builder (4.2.3) Powered by Atlassian Confluence 3.5.13, the Enterprise Wiki ABOUT About this site IS&T Services HOW TO Become a contributor Create an article Comment on an article Add a term to the Glossary HELP Contact the KnowledgeBase team Contact the Help Desk Search the archive Glossary of MIT IT terms BLOGS WebPub IS&T Security FYI Blog FOLLOW IS&T Facebook Twitter RSS