Unable to Start Listener? ORacle 10.2.0 (solved)

Question

I am on Oracle 10.2.0
I followed the necessary steps to the T.
I tried to Connect to the database using SQL*Plus:
sqlplus
system
system_password
select count(*) from dba_objects; #(This should
# return a count of the number of objects in the
# database)
But i was unable to connect. The problem is that i don't remember my system login and password? How do i resest these?
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Message was edited by:
montero
Message was edited by:
montero

Answer 1

thanks yingkuan. My problem is i can't get my listener started.
when i do the following i get errors.
I log into the system as oracle.
[oracle@montero admin]$ lsnrctl start
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 29-NOV-2007 10:47:24
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /home/oracle/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /home/oracle/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /home/oracle/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=MYDB)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY)))
Error listening on: (ADDRESS=(PROTOCOL=TCP)(Host=montero.dhcp.domain.com)(Port=1521))
TNS-12560: TNS:protocol adapter error
TNS-00583: Valid node checking: unable to parse configuration parameters
Listener failed to start. See the error message(s) above...
here is an exact copy and paste of the contents of my listener.ora file:
# listener.ora Network Configuration File: /home/oracle/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
# Version Date: NOV-28-07
# Filename: Listener.ora
LISTENER =
(ADDRESS_LIST =
(ADDRESS= (PROTOCOL= IPC)(KEY=MYDB))
(ADDRESS= (PROTOCOL= IPC)(KEY= PNPKEY))
(ADDRESS= (PROTOCOL= TCP)(Host= dina.dhcp.2wire.com)(Port= 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME= montero.dhcp.domain.com.)
(ORACLE_HOME= /home/oracle/app/oracle/product/10.2.0/db_1)
(SID_NAME = MYDB)
(SID_DESC =
(SID_NAME = extproc)
(ORACLE_HOME = /home/oracle/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
STARTUP_WAIT_TIME_LISTENER = 0
CONNECT_TIMEOUT_LISTENER = 10
TRACE_LEVEL_LISTENER = OFF