Oracle SQL Developer - TNS

Hi.
Before installing Oracle 11g, Microsoft Loopback adapter installed. During the installation I did not have any errors, but I can not connect to database XE
tnsnames.ora:
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.101)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = xe)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
sqlnet.ora:
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
listener.ora:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\app\ola\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\app\ola\product\11.2.0\dbhome_1\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.101)(PORT = 1521))
ADR_BASE_LISTENER = C:\app\ola
In Oracle SQL Developer, I have set:
Connection name: system
Role: default
Connection type: TNS
Network Alias: XE
+ OS Authentication
but I have:
Status: Failure- Test failed. The Network Adapter could not establish the connection.
Please kindly clue how to solve the problem

C:\Users\ola>tnsping XE
TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 30-JAN-2
013 13:56:49
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\app\ola\product\11.2.0\dbhome_1\NETWORK\ADMIN\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.
0.101)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = xe)))
TNS-12535: TNS:operation timed out
C:\Users\ola>
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\ola>lsntcrl status
'lsntcrl' is not recognized as an internal or external command,
operable program or batch file.
C:\Users\ola>lsntcrl service
'lsntcrl' is not recognized as an internal or external command,
operable program or batch file.
C:\Users\ola>sqlplus scott/tiger@xe
SQL*Plus: Release 11.2.0.1.0 Production on Wed Jan 30 14:01:39 2013
Copyright (c) 1982, 2010, Oracle. All rights reserved.
ERROR:
ORA-12170: TNS:Connect timeout occurred
Enter user-name: sys as sysdba
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
I added variables (Eviromment Variables ) -> System Variables:
TNS_ADMIN
C:\app\ola\product\11.2.0\dbhome_1\NETWORK\ADMIN
SHOW PARAMETER os_authent_prefix
NAME___________TYPE_VALUE
os_authent_prefix string ops$
Edited by: user13387916 on 2013-01-30 14:17

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