I am having a problem connecting sql developer to my Oracle 10g database. sqlplus is able to connect fine, but when I try to open the connection in sql developer, I get 'ORA-12514 TNS does not know of service' error. I have tried modifying my tnsnames.ora file. It has the following:
COTT3 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVER_NAME = COTT3)
)
)
Can anyone assist with any other files I may need to modify or let me know where im going wrong?
Thanks
UPDATE
Output of lsnrctl status
[oracle@VM-COT-DEV1 ~]$ lsnrctl status
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 02-FEB-2012 13:57:20
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 02-FEB-2012 13:01:25
Uptime 0 days 0 hr. 55 min. 54 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /opt/oracle/oracle/product/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
enter code here
Best Answer
Try this:
If that doesn't work, replace "SERVICE_NAME" with "SID".
Put this in $ORACLE_HOME/network/admin/listener.ora:
Then restart the listener with:
Are you 100% sure that the database has started up?
Does:
... produce any output?