Security :: Creating Wallet - System Does Not Prompt For Password

I'm trying to hide the password for the batch programs that connect to the DB Server

as Cadot pointed out in

[URL].........

Quote:
use secure external password store

with reference to

[URL].........

when I create wallet, the system does not prompt me for password

C:>mkstore -wrl "C:ora102NETWORKADMIN" -create

when creating login credentials, again the system never prompts me for password

C:>mkstore -wrl "C:ora102NETWORKADMIN" -createCredential db10g scott tiger

here's my sqlnet.ora configurations

WALLET_LOCATION =
(SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY =C:ora102NETWORKADMIN)
)
)
SQLNET.WALLET_OVERRIDE = TRUE
SSL_CLIENT_AUTHENTICATION = FALSESSL_VERSION = 0

here's my tnsname.ora settings

DB10G =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = mike)
)
)

here's the outcome

C:Documents and SettingsAdministrator>sqlplus /@db10g
SQL*Plus: Release 10.2.0.4.0 - Production on Wed Apr 13 22:53:06 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.

ERROR:
ORA-12534: TNS:operation not supported

Enter user-name:

so I Google around for the solution to the ORA-12534 error, one of the site,

[URL].......

here's my lsnrctl services

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
Services Summary...
Service "MIKEXDB" has 1 instance(s).
Instance "mike", status READY, has 1 handler(s) for this service...
Handler(s):
[code].....

The command completed successfully

right now I think I will be a fool to think that the solution is to resolve the ERROR: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor. so what is wrong with my setup, or is it some patch that I need to apply?