C:\Users\Tequila>tnsping ORCL;TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 27-JAN-2013 16:54:13Copyright (c) 1997, 2010, Oracle. All rights reserved.Used parameter files:
F:\app\Tequila\product\11.2.0\dbhome_1\network\admin\sqlnet.oraTNS-03505: Failed to resolve nameC:\Users\Tequila>sqlnet.ora code：
# sqlnet.ora Network Configuration File: F:\app\Tequila\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)
listener.ora code:
# listener.ora Network Configuration File: F:\app\Tequila\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 = F:\app\Tequila\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:F:\app\Tequila\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
)LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
)ADR_BASE_LISTENER = F:\app\Tequilatnsnames.ora code:
# tnsnames.ora Network Configuration File: F:\app\Tequila\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.LISTENER_ALEX =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)ALEX =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = Alex)
)
)C:\Windows\System32\drivers\etc\hosts code
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host# localhost name resolution is handled within DNS itself.
127.0.0.1 localhost
# ::1 localhost
F:\app\Tequila\product\11.2.0\dbhome_1\network\admin\sqlnet.oraTNS-03505: Failed to resolve nameC:\Users\Tequila>sqlnet.ora code：
# sqlnet.ora Network Configuration File: F:\app\Tequila\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)
listener.ora code:
# listener.ora Network Configuration File: F:\app\Tequila\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 = F:\app\Tequila\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:F:\app\Tequila\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
)LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
)ADR_BASE_LISTENER = F:\app\Tequilatnsnames.ora code:
# tnsnames.ora Network Configuration File: F:\app\Tequila\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.LISTENER_ALEX =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)ALEX =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = Alex)
)
)C:\Windows\System32\drivers\etc\hosts code
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host# localhost name resolution is handled within DNS itself.
127.0.0.1 localhost
# ::1 localhost
运行regedit，选择HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE，按del键删除这个入口
运行regedit，选择HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services，滚动这个列表，删除所有Oracle入口。
ALEX =
=======================================
你的 tnsnames.ora 文件中根本没有 ORCL 的定义啊。
我记着 tnsping orcl；
后面不需要加那个分号，如果加上分号的话，ORACLE会认为你TNSPING的是ORCL; 而不是ORCL