客户端链接oracle报28547

[zjyyahx]

listener.ora
# listener.ora Network Configuration File: E:\Users\zhangj\orclapp\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = E:\Users\zhangj\orclapp\product\11.2.0\dbhome_1)
(SID_NAME = ORCL)

)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
#(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)

ADR_BASE_LISTENER = E:\Users\zhangj\orclapp

sqlnet.ora

# sqlnet.ora Network Configuration File: E:\Users\zhangj\orclapp\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.

# 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)
NAMES.DIRECTORY_PATH=(TNSNAMES,HOSTNAME)


#SQLNET.AUTHENTICATION_SERVICES= (NONE)
#NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

tnsnames.ora
# tnsnames.ora Network Configuration File: E:\Users\zhangj\orclapp\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))


ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ORCL)
)
)

网上有人说是listener.ora中多个(PROGRAM = extproc) 去了还是不行
还有人说sqlnet.ora中SQLNET.AUTHENTICATION_SERVICES= (NTS) nts改成none 但还是不行
求高手解答！！！！