ошибка ora-12154

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выручайте!!!
выдает ошибку при проверке связи бд в оракле
включал все службы связанные с оракл и ничего(
Borland Developer Studio 2006 + Oracle Database 10g Express Edition
windows 7 x64
на форумах писали про эти файлы но все нето(
содержимое файлов

Listener

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 = AK-HP)(PORT = 1521))
)
)

DEFAULT_SERVICE_LISTENER = (XE)


tnsnames

XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = AK-HP)(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) 
) 
) 



sqlnet

# This file is actually generated by netca. But if customers choose to 
# install "Software Only", this file wont exist and without the native 
# authentication, they will not be able to connect to the database on NT.

SQLNET.AUTHENTICATION_SERVICES = (NTS)