Need help on Oracle Driver

Question

I am using Oracle 10g and I want to set up ODBC at Control Panel(Administrative Tools).
I have to driver in ODBC to setup New Data Source fro Oracle, that is
     1. Oracle in OraClient11g_home1
     2. Oracle in OraDB10g_home1
When in choose the Oracle in OraClient11g_home1 driver. The TNS Service Name did not list up.
But when i choose Oracle in OraDB10g_home1 driver , the TNS Service Name will list up.
Why it happend?
I need to used Oracle in OraClient11g_home1 driver because i need to used ODP.NET.
The tnsnames.ora for Oracle in OraClient11g_home1 are located at C:\app\Administrator\product\11.2.0\client_1\Network\Admin.
The tnsnames.ora for OraDB10g_home1 are located at C:\oracle\product\10.2.0\db_1\NETWORK\ADMIN
All contains in tnsnames.ora are same
ORCL1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = fakhrimini)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl1)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
Can someone help me on how to make The TNS Services Names list in Oracle in OraClient11g_home1 driver?

Answer 1

This is PATH in Enviroment Variable.
C:\oracle\product\10.2.0\db_1\bin;C:\app\Administrator\product\11.2.0\client_1;C:\app\Administrator\product\11.2.0\client_1\bin;C:\DevSuiteHome_4\bin;%SystemRoot%\system32
This is result for tnsping
C:\Documents and Settings\Administrator>tnsping orcl1
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 06-JUL-2011 09:48:15
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = fakhrimi
ni)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl1)))
OK (30 msec)
C:\Documents and Settings\Administrator>
This is added information from TOAD.
SOFTWARE\ORACLE\KEY_DEVSUITEHOME4
ORACLE_HOME_NAME: DevSuiteHome4
ORACLE_HOME: C:\DevSuiteHome_4
ORACLE_SID: orcl1
NLS_LANG: AMERICAN_AMERICA.WE8MSWIN1252
SQLPATH: C:\DevSuiteHome_4\dbs
LOCAL:
C:\DevSuiteHome_4\Bin exists.
C:\DevSuiteHome_4\Bin is in PATH.
Client DLL: C:\DevSuiteHome_4\Bin\oci.dll
Client Version: 10.1.0.4.0
Home is valid.
SOFTWARE\ORACLE\KEY_ORACLIENT11G_HOME1
ORACLE_HOME_NAME: OraClient11g_home1
ORACLE_HOME: C:\app\Administrator\product\11.2.0\client_1
ORACLE_SID: orcl1
NLS_LANG: AMERICAN_AMERICA.WE8MSWIN1252
SQLPATH:
LOCAL:
C:\app\Administrator\product\11.2.0\client_1\Bin exists.
C:\app\Administrator\product\11.2.0\client_1\Bin is in PATH.
Client DLL: C:\app\Administrator\product\11.2.0\client_1\oci.dll
Client Version: 11.2.0.1.0
Home is valid.
SOFTWARE\ORACLE\KEY_ORADB10G_HOME1
ORACLE_HOME_NAME: OraDb10g_home1
ORACLE_HOME: C:\oracle\product\10.2.0\db_1
ORACLE_SID: orcl1
NLS_LANG:
SQLPATH:
LOCAL:
C:\oracle\product\10.2.0\db_1\Bin exists.
C:\oracle\product\10.2.0\db_1\Bin is in PATH.
Client DLL: C:\oracle\product\10.2.0\db_1\Bin\oci.dll
Client Version: 10.2.0.1.0
Home is valid.
Instant Client - 11.2.0.1.0
ORACLE_HOME_NAME: C:\app\Administrator\product\11.2.0\client_1
ORACLE_HOME: C:\app\Administrator\product\11.2.0\client_1
ORACLE_SID: orcl1
NLS_LANG:
SQLPATH:
LOCAL:
C:\app\Administrator\product\11.2.0\client_1 exists.
C:\app\Administrator\product\11.2.0\client_1 is in PATH.
Client DLL: C:\app\Administrator\product\11.2.0\client_1\oci.dll
Client Version: 11.2.0.1.0
Home is valid.
In Toad, the client Instant Client - 11.2.0.1.0 didnot list the tnsnames or database, but all client show the tnsnames or database
where i need to type export TNS_ADMIN, ORACLE_HOME, PATH,? in command prompt or sqlplus?