I cannot log in the database

Question

I installed the oracle 10g r2 database, the installation was succesful, but i need to make a log in with sqlplus but i can´t, I don`t know what user, password and host string need, i have tried with all sys, system, sysdba, etc.

Answer 1

I followed your advise and i got this. Can you explain me what does it mean??
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.
E:\>sqlplus system/password123 as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Aug 16 14:49:33 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-01031: insufficient privileges
E:\>lsnrctl status
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 16-AUG-2006 14:50
:48
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=190.168.0.96)(PORT=2034)
TNS-12535: TNS:operation timed out
TNS-12560: TNS:protocol adapter error
TNS-00505: Operation timed out
32-bit Windows Error: 60: Unknown error
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=alumno07.consorcio.com.e
c)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Produ
ction
Start Date 16-AUG-2006 13:02:25
Uptime 0 days 1 hr. 48 min. 43 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File e:\oracle\product\10.2.0\db_1\network\admin\listener.o
ra
Listener Log File e:\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=alumno07.consorcio.com.ec)(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