Database not getting connected from sql developer(Vendor code 20)

Question

Am getting the following error while connecting db from sql dev
"network adapter could not establish connection vendor code 20"
FYI - database is up and running fine in sqlplus, and am not able to find the service in lnsrctl. As am using OIM db as service name while its showing CLRExtProc.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Prod
ction
Start Date 21-NOV-2012 20:28:48
Uptime 0 days 0 hr. 27 min. 32 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File d:\app\Karan\product\11.2.0\dbhome_1\network\admin\li
tener.ora
Listener Log File d:\app\karan\diag\tnslsnr\Karan-PC\listener\alert\log
xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 3 handler(s) for this service...
The command completed successfully
Also contents of tnsnames.ora and listener.ora are shown below
# listener.ora Network Configuration File: d:\app\Karan\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = d:\app\Karan\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:d:\app\Karan\product\11.2.0\dbhome_1\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
ADR_BASE_LISTENER = d:\app\Karan
---------------------------------------------tnsnames.ora-----------------------------------------------------
# tnsnames.ora Network Configuration File: d:\app\Karan\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
OIMDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = OIMDB)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
FYI - yesterday all database was running fine. As I was trying to do some modifications in tnsnames.ora and listener.ora, I was unable to save them, as permission is denied.
Kindly suggest.....
Regards,
KK

Answer 1

stop everything OIM, Database and listener.
now open your listener.ora and put below ( backup the original one somewhere)
LISTENER=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=extproc))))
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=oimdb)
(ORACLE_HOME=d:\app\Karan\product\11.2.0\dbhome_1)
(SID_NAME=OIMDB)))
LISTENER=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=extproc))))
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=oimdb)
(ORACLE_HOME=d:\app\Karan\product\11.2.0\dbhome_1)
(SID_NAME=oimdb))
(SID_DESC=
(SID_NAME=plsextproc)
(ORACLE_HOME=d:\app\Karan\product\11.2.0\dbhome_1)
(PROGRAM=extproc)))
1.set ORACLE_SID at command prompt . like set ORACLE_SID=OIMDB
2.start listener (lsnrctl start)
3.start database.
4. check this query ( select instance_name from v$instance;)
5. check listener status( lsnrctl status)
if still doesn't work try same step with the original listener.ora file