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ORA-12514 means your instance is not registered against the listener.
1. Check the status of your listener with the lsnrctl status command and verify the registered services. You may also use the lsnrctl services command too.
2. Check the status of your Oracle Instance, after the above error, I figure out this has either not started or it has not yet registered against the listener.
If you are able to connect to your instance then check the instance status with the select command:
sqlplus / as sysdba
SQL> SELECT STATUS FROM V$INSTANCE;
This should show OPEN. Oracle XE is configured to self-register against the listener when it is attached at the 1521 port. You may force instance registration too with the command:
ALTER SYSTEM REGISTER;
Thanks for your response!
The question is, why is my instance is not registered against the listener? This should happen automatically during the setup routine. If not, the install process cannot do its job, because it needs to run scripts to fulfill its task.
The windows service OracleServiceXE is runnning!
Here is the output of lsnrctl status:
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 29-OKT-2007 21:19:18
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Anmeldung bei (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS des LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production
Startdatum 29-OKT-2007 17:45:53
Uptime 0 Tage 3 Std. 33 Min. 25 Sek.
Sicherheit ON: Local OS Authentication
Parameterdatei des Listener D:\oraclexe\app\oracle\product\10.2.0\server\network\admin\listener.ora
Log-Datei des Listener D:\oraclexe\app\oracle\product\10.2.0\server\network\log\listener.log
Dienst "CLRExtProc" hat 1 Instance(s).
Instance "CLRExtProc", Status UNKNOWN, hat 1 Handler für diesen Dienst...
Dienst "PLSExtProc" hat 1 Instance(s).
Instance "PLSExtProc", Status UNKNOWN, hat 1 Handler für diesen Dienst...
Der Befehl wurde erfolgreich ausgeführt.
I can see here the listener is started, but I don't see the instance. Since you are using the default 1521 listener port oracle should look for this as soon as the oracle instance starts to have itself registered against this listener, if this is not happening it is not because of a lack of scripts to accomplish this task since this is a dba side troubleshooting task.
Please verify if the instance is up and running according to the directions I suggested on my previous post.
Make sure the Windows Oracle XE service is up and running and your windows user belongs to the ORA_DBA privileged dba group.
If by "the instance" you mean OracleServiceXE, then yes it is running! I can't run SqlPlus and can't run the db-homepage. So I can't look up the privileges. But remember that this is the situation I found just after the installation process, which failed. And I don't think that I can fix this instllation. So what I am looking for is: How can I prepare (and possibly fix) my Windows XP to make the installation process run correctly next time.
I found 2 suspicious entries in the System Application log:
The description for Event ID ( 34 ) in Source ( Oracle.xe ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: ACTION : 'CONNECT' DATABASE USER: '/' PRIVILEGE : SYSDBA CLIENT USER: NT-AUTORITÄT\SYSTEM CLIENT TERMINAL: SPOCK STATUS: 0 .
The description for Event ID ( 0 ) in Source ( IDriverT ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: Service started.
Do they mean something to you?
I am having exactly the same problem as yours. Did you find the resolution to your issue?
Greetings, in case to somebody it serves to him. I had the same problem and she solves it of the following way:
Uninstall oracle express edition and soon deactivates windows firewall. Disconnect the network cable because I am in a domain, to avoid system policies.
Restart the PC and soon setup again oracle express edition.
Once installed, it tries to connect from web broser and from sqlplus and everything works correctly. Later it connects the cable, restart and everything carry on working well.
sorry my english
thank you very much. After few hours of browsing and trying everything else this helped me.