When connecting to database in SQL* plus giving Error

Question

hi,
I am using Oracle 10g. My problem is when i connecting to database in Server through SQL * Plus giving the Error:
ORA-12514: TNS:listerner does not currently know of service requested in connect descriptor.
Why this is happening i don't know. I created listener also. But no use. How to solve this can any tell me pls... ! .
Thank u...!

Answer 1

hi,
Thank u bang for u r reply. It is not working sir. I added the listener as follows:
# listener.ora Network Configuration File: D:\oracle10g\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = HA14)(PORT = 1521))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle10g)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = OVSL06)
(ORACLE_HOME = D:\oracle10g)
(SID_NAME = OVSL06)
(SID_DESC =
(GLOBAL_DBNAME = OVSL06)
(ORACLE_HOME = D:\oracle10g)
(SID_NAME = OVSL06)
I typed the following commands in command prompts
C:\>lsnrctl
LSNRCTL for 32-bit Windows: Version 10.1.0.2.0 - Production on 30-MAY-2007 16:29
:14
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> stop
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=HA14)(PORT=1521)))
The command completed successfully
LSNRCTL> start
Starting tnslsnr: please wait...
TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Production
System parameter file is D:\oracle10g\network\admin\listener.ora
Log messages written to D:\oracle10g\network\log\listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=HA14)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=HA14)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Produ
ction
Start Date 30-MAY-2007 16:29:28
Uptime 0 days 0 hr. 0 min. 2 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File D:\oracle10g\network\admin\listener.ora
Listener Log File D:\oracle10g\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=HA14)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
same error is getting as i am getting previously. Tell me solution pls....!
Thank u...!