-lo exception the network adapter could not establish the connection

Question

Hi,
I am getting following error when connecing to Oracle database
error: -lo exception the network adapter could not establish the connection
I am able to connect through sqlplus
pls help
thanks

Answer 1

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\2101571>sqlplus
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Aug 29 22:56:02 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Enter user-name: sys as sysdba
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> kocdw as sysdba
SP2-0734: unknown command beginning "kocdw as s..." - rest of line ignored.
SQL> conn kocdw
Enter password:
Connected.
SQL> startup
ORA-01031: insufficient privileges
SQL> conn sys as sysdba
Enter password:
Connected.
SQL> startup
ORA-01081: cannot start already-running ORACLE - shut it down first
SQL> select instance_name from V$instance;
INSTANCE_NAME
orcl01
SQL> SELECT * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE 11.1.0.6.0 Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
SQL>