Oracle XE installation in Windows Server 2008

Question

Hi all,
I need to install the Oracle XE version on a Windows Server 2008 but I'm not beeing successfully... I already reinstalled it 3 times, tried all solutions I could find all over the internet but still it doesn't work so I was hopping that someone out there could help me.
This is my current configuration:
===========
LISTENER.ORA:
===========
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = VALKYRIE.rhdevelop.local)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
===========
SQLNET.ORA:
===========
SQLNET.AUTHENTICATION_SERVICES = (NONE)
===========
TNSNAMES.ORA:
===========
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = VALKYRIE.rhdevelop.local)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
===========
result of "lsnrctl services" command:
===========
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 04-NOV-2010 00:59:26
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
The command completed successfully
===========
result of "tnsping xe" command:
===========
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 04-NOV-2010 01:00:29
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = VALKYRIE.rhdevelop.local)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NA
ME = XE)))
OK (10 msec)
When I try to access it thru the web (http://127.0.0.1:8081/apex) it gives a unable to connect error page.
When I try to connect to sqlplus using "sqlplus / as sysdba" it says:
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Nov 4 01:03:45 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
I don't know what else to do and any hint would be very much appreciated.
Thank you!

Answer 1

C:\>set
ALLUSERSPROFILE=C:\ProgramData
APPDATA=C:\Users\Administrator\AppData\Roaming
CG_BOOST_ROOT=C:\Program Files (x86)\Embarcadero\RAD Studio\7.0\include\boost_1_39
CLIENTNAME=ROSS_01-PC
CommonProgramFiles=C:\Program Files\Common Files
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
COMPUTERNAME=VALKYRIE
ComSpec=C:\Windows\system32\cmd.exe
DXVCL=C:\Dev\Vcl\Developer Express.VCL
FP_NO_HOST_CHECK=NO
HOMEDRIVE=C:
HOMEPATH=\Users\Administrator
lib=C:\Program Files\SQLXML 4.0\bin\
local=LISTENER
LOCALAPPDATA=C:\Users\Administrator\AppData\Local
LOGONSERVER=\\VALKYRIE
NLS_LANG=American_America.we8iso8859p15
NUMBER_OF_PROCESSORS=8
ORACLE_HOME=C:\oraclexe\app\oracle\product\10.2.0\server
ORACLE_SID=xe
OS=Windows_NT
Path=C:\oraclexe\app\oracle\product\10.2.0\server\bin;C:\Program Files (x86)\Embarcadero\RAD Studio\7.0\bin;C:\Users\allaccess\Documents\RAD Studio\7.0\Bpl;C:\W
indows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft\Exchange Server\bin;C:\Program Files\
Microsoft\Exchange Server\Scripts;C:\Program Files (x86)\Microsoft SQL Server\90\Tools\binn\;C:\Program Files (x86)\Microsoft SQL Server\80\Tools\Binn\;c:\Progr
am Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\DTS\Binn\;c:
\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files (x86)\M
icrosoft SQL Server\90\DTS\Binn\;C:\Dev\Vcl\Developer Express.VCL\Library\Delphi14;C:\Program Files (x86)\Java\jre6\bin\
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
PROCESSOR_ARCHITECTURE=AMD64
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 26 Stepping 5, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=1a05
ProgramData=C:\ProgramData
ProgramFiles=C:\Program Files
ProgramFiles(x86)=C:\Program Files (x86)
PROMPT=$P$G
PUBLIC=C:\Users\Public
SESSIONNAME=RDP-Tcp#0
SystemDrive=C:
SystemRoot=C:\Windows
TEMP=C:\Users\Administrator\AppData\Local\Temp\2
TMP=C:\Users\Administrator\AppData\Local\Temp\2
USERDNSDOMAIN=RHDEVELOP.LOCAL
USERDOMAIN=RHDEVELOP
USERNAME=administrator
USERPROFILE=C:\Users\Administrator
windir=C:\Windows