4

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
Improve this question
3
  • What is the JDBC url you use in SQL Developer? Commented Feb 2, 2012 at 12:40
  • SYS@//localhost:1521/COTT3 Commented Feb 2, 2012 at 14:06
  • That's not a JDBC url (they start with jdbc:) Commented Feb 2, 2012 at 14:07

2 Answers 2

Reset to default
3

Try this:

COTT3 = 
 (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
  (CONNECT_DATA = 
   (SERVER = DEDICATED)
   (SERVICE_NAME = COTT3)
  )
)

If that doesn't work, replace "SERVICE_NAME" with "SID".

Put this in $ORACLE_HOME/network/admin/listener.ora:

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
      )
    )
  )

SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (SID_NAME = COTT3)
          (ORACLE_HOME = /opt/oracle/oracle/product/10.2.0/db_1 )
    )
  )

Then restart the listener with:

lsnrctl reload

Are you 100% sure that the database has started up?

Does:

ps auxww | grep pmon | grep -i cott3

... produce any output?

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0
1

here is my listener.ora:

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (SID_NAME = XE)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )

DEFAULT_SERVICE_LISTENER = (XE)

After adding 

    (SID_DESC =
      (SID_NAME = XE)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
    )

to SID_LIST_LISTENER and restart "OracleXETNSListener" windows service, I was able to connect in SQLDeveloper using service_name=XE

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1
  • 1
    This appears to basically be saying, "I followed the advice in the other answer, and it worked." If this is intended to be a separate answer, you should clarify what the difference between your answer and the accepted one is. If this intended as a "Hey, it actually worked" comment, then it should be just that - a comment. As you develop your reputation on this site, you'll gain the ability to comment on others' posts. Commented Sep 21, 2017 at 22:03

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