oracle 11XE and ODT32 on windows - multiple issues - windows

Question

I installed Oracle 11 XE on a 64bit Windows 2008R2. This is a development machine, therefore I have also installed Oracle Developer Tools for .NET (32bit). Both these installations come with their own version of SQLplus.
I have set up the tnsnames.ora and sqlnet.ora to be identical for both these oracle products, but I cannot connect to the local XE from either SQLplus. I get ORA-12560 everytime. the Oracle 11 XE home page also doesn't start.
---TNSNAmes.ora ----
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = DDSAP236.asxdev.asx.com.au)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)
----END TNSNAMEs.ora---
---Listener.Ora ---
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\Oracle\11Express\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = D:\Oracle\11Express\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = DMACHINE.MyDomain.com)(PORT = 1521))
)
)
DEFAULT_SERVICE_LISTENER = (XE)
--End listener.ora----
In services.msc and lsntctrl both shows the XElistener service have started.
I am wondering what else I can check?
Can I run XE (32bit) on Win2008R2?
Can I run XE together with ODTODAC32 on Win2008R2?
How do I resolve ORA-12560 so I can connect to the XE database?
Additional Info
In the registry of this machine under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Note\Oracle I have 5 folders - can someone confirm if this is correct?
The folders are:
KEY_ (not sure if this is correct)
KEY_OracleClient11g_HOME (the Oracle ODT client install's home)
KEY_EX (11g EX install's home)
ODP.Net (part of ODP install )
OracleMTSRecoveryService (part of ODP install)

Answer 1

If that's indeed your TNSNAMES.ORA, your syntax is broken - you have extra spaces in front of the connection aliases (first line of each entry), which might cause your problems. Your TNSNAMES.ORA should look like this:
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = DDSAP236.asxdev.asx.com.au)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)
If your "real" TNSNAMES.ORA is correct, however:
what is the output of lsnrctl status?
what does your listener log contain?
does sqlplus / as sysdba work?