ONCE I ASKED THE SAME QUESTION
DEAR EXPERT..I WAS OVER CONFIDENT AND ACCEPTED
PLEASE HELP ME I AM IN WORK PLACE
I WOULD APPRECIATE THAT.



MY NEW LISTENER.ORA IS

# listener.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
      (PROGRAM = extproc)
    )
   (SID_DESC =
      (SID_NAME = orcl)
      (ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
    )
  )
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = admin-44b005214.gateway.2wire.net)(PORT = 1521))
    )
   )
===============================================
then

C:\Documents and Settings\Administrator>lsnrctl stop

LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 22-NOV-2006 15:24
:41

Copyright (c) 1991, 2005, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
The command completed successfully

C:\Documents and Settings\Administrator>lsnrctl start

LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 22-NOV-2006 15:25
:03

Copyright (c) 1991, 2005, Oracle.  All rights reserved.

Starting tnslsnr: please wait...

TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production
System parameter file is C:\oracle\product\10.2.0\db_1\network\admin\listener.or
a
Log messages written to C:\oracle\product\10.2.0\db_1\network\log\listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc
)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=admin-44b005214)(PORT=15
21)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Produ
ction
Start Date                22-NOV-2006 15:25:06
Uptime                    0 days 0 hr. 0 min. 3 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   C:\oracle\product\10.2.0\db_1\network\admin\listener.o
ra
Listener Log File         C:\oracle\product\10.2.0\db_1\network\log\listener.log

Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=admin-44b005214)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

C:\Documents and Settings\Administrator>lsnrctl status

LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 22-NOV-2006 15:25
:14

Copyright (c) 1991, 2005, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Produ
ction
Start Date                22-NOV-2006 15:25:06
Uptime                    0 days 0 hr. 0 min. 9 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   C:\oracle\product\10.2.0\db_1\network\admin\listener.o
ra
Listener Log File         C:\oracle\product\10.2.0\db_1\network\log\listener.log

Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=admin-44b005214)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

C:\Documents and Settings\Administrator>set oracle_sid=orcl

C:\Documents and Settings\Administrator>sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on Wed Nov 22 15:25:25 2006

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

SQL> conn / as sysdba
Connected.
SQL> shutdown immediate;
ORA-00474: SMON process terminated with error
SQL>


SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.

Total System Global Area  167772160 bytes
Fixed Size                  1247900 bytes
Variable Size              62915940 bytes
Database Buffers          100663296 bytes
Redo Buffers                2945024 bytes
Database mounted.
Database opened.
SQL> shutdown immediate;
ORA-03113: end-of-file on communication channel

CAN U HELP ME TO RESOLVE