oracle 11g R2 ORA-12154：TNS:无法解析指定的连接标识符

[心灵彩虹]

如题：按照此贴（http://supportopensource.iteye.com/blog/1046171）分别安装了oracle11gR2，正确安装：然后用plsql打开oracle的时候报了以上错误？ 错误：ORA-12154：TNS:无法解析指定的连接标识符
本人oracle菜青虫一只，所以上网查了一堆，什么呢监听配置啦，
文件内容如下

客户端：tnsnames.ora文件内容：
# tnsnames.ora Network Configuration File: C:\app\gfl\product\11.2.0\client_1\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.

CLREXTPROC =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = CLRExtProc.127.0.0.1)
)
)
客户端listener.ora文件内容：

# listener.ora Network Configuration File: C:\app\gfl\product\11.2.0\client_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = Oracle11g)
(ORACLE_HOME = C:\app\gfl\product\11.2.0\client_1)
(SID_NAME = CLRExtProc)
)
)

LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = gfl-PC)(PORT = 1521))
)

ADR_BASE_LISTENER = C:\app\gfl\product\11.2.0\client_1\log




客户端sqlnet.ora文件内容：

# sqlnet.ora Network Configuration File: C:\app\gfl\product\11.2.0\client_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, EZCONNECT)



服务端listener.ora文件内容：

# listener.ora Network Configuration File: E:\app\gfl\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = E:\app\gfl\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:E:\app\gfl\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
(SID_DESC =
(GLOBAL_DBNAME = Oracle11g)
(ORACLE_HOME = E:\app\gfl\product\11.2.0\dbhome_1)
(SID_NAME = CLRExtProc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = gfl-PC)(PORT = 1521))
)
)

ADR_BASE_LISTENER = E:\app\gfl


服务端sqlnet.ora文件内容：

# sqlnet.ora Network Configuration File: E:\app\gfl\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, EZCONNECT)



服务端文件内容： tnsnames.ora
# tnsnames.ora Network Configuration File: E:\app\gfl\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

LISTENER_ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)

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

CLREXTPROC =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = CLRExtProc.127.0.0.1)
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = E:\app\gfl\product\11.2.0\dbhome_1)
(SID_NAME = ORCL)
)
)

plsql developer登陆的信息：

username：SYSTEM
password：manager
database：ocrl
connect as：normal

登入失败显示以上错误，请大神予以指教。

[心灵彩虹]

我的系统是win7 64位

[linwaterbin]

先看看这个 http://bbs.csdn.net/topics/390312212

[vanjayhsu]

开始--CMD--sqlplus / as sysdba--select status from v$instance;--把结果贴出来看看

[Kobayashi]

TNS错误就是客户端解析不了服务器的连接。 你可以先检查一下连接是否正确。如果正确的话。那你看下服务器的防火墙啊什么的是否关了。