无法从其他计算机连接oracle数据库

我有两台计算机，计算机A有IP（10.11.11.2），其中包含oracle数据库11g R2，计算机B有IP（10.11.11.18）。我搜索了很多，在Tnsnames.ora和listener.ora文件中做了一些更改，但无法连接。但当我从客户机中输出10.11.11.2时，它会给出OK输出。这意味着数据库可以从客户端访问，但我无法使用Toad或Sqldeveloper连接数据库

错误信息如下： tns目前不知道请求的服务

我的电脑A（10.11.11.2）tnsname.ora和listener.ora文件粘贴到下面：

Tnsnames.ora文件

# tnsnames.ora Network Configuration File:     D:\app\Mobilityusr\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)
    )
  )

# listener.ora Network Configuration File: D:\app\Mobilityusr\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 = D:\app\Mobilityusr\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\app\Mobilityusr\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.11.11.2)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\app\Mobilityusr

# tnsnames.ora Network Configuration File: D:\app\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)
    )
  )

listener.ora文件

# tnsnames.ora Network Configuration File:     D:\app\Mobilityusr\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)
    )
  )

# listener.ora Network Configuration File: D:\app\Mobilityusr\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 = D:\app\Mobilityusr\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\app\Mobilityusr\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.11.11.2)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\app\Mobilityusr

# tnsnames.ora Network Configuration File: D:\app\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)
    )
  )

我的电脑B（10.11.11.18）tnsname.ora和listener.ora文件粘贴到下面：

tnsnames.ora文件

# tnsnames.ora Network Configuration File:     D:\app\Mobilityusr\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)
    )
  )

# listener.ora Network Configuration File: D:\app\Mobilityusr\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 = D:\app\Mobilityusr\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\app\Mobilityusr\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.11.11.2)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\app\Mobilityusr

# tnsnames.ora Network Configuration File: D:\app\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)
    )
  )

listener.ora

# listener.ora Network Configuration File: D:\app\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 = D:\app\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS =     "EXTPROC_DLLS=ONLY:D:\app\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

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

ADR_BASE_LISTENER = D:\app

# listener.ora Network Configuration File: D:\app\Mobilityusr\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 = D:\app\Mobilityusr\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS =     "EXTPROC_DLLS=ONLY:D:\app\Mobilityusr\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )  
    (SID_DESC =
     (GLOBAL_DBNAME = orcl)
     (ORACLE_HOME = D:\app\Mobilityusr\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))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.11.11.2)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\app\Mobilityusr

从计算机B到oracle数据库（安装在Comupter A上）的tnsping图像也附于此：

错误图片也附上

---

在SQLDeveloper中，不要指定SID，而是选择服务名称。

经过大量研究，我解决了这个问题。我也必须与您共享它，以便任何有此问题的人都可以轻松解决它

Listener.ora文件用于侦听请求。若要从另一台计算机访问数据库，必须在listener.ora中添加两个条目（一个用于SID，另一个用于机器IP地址）

计算机A文件（listener.ora和tnsnames.ora）设置如下所示：

Listener.ora

# listener.ora Network Configuration File: D:\app\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 = D:\app\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS =     "EXTPROC_DLLS=ONLY:D:\app\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

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

ADR_BASE_LISTENER = D:\app

# listener.ora Network Configuration File: D:\app\Mobilityusr\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 = D:\app\Mobilityusr\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS =     "EXTPROC_DLLS=ONLY:D:\app\Mobilityusr\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )  
    (SID_DESC =
     (GLOBAL_DBNAME = orcl)
     (ORACLE_HOME = D:\app\Mobilityusr\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))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.11.11.2)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\app\Mobilityusr

SID_LIST_LISTENER包含两个条目第一个SID_DESC是默认条目，我们必须添加第二个SID_DESC以识别orcl SID，否则当从其他计算机连接数据库时，Sqldeveloper或toad或sqlplus将给出以下错误： 错误：sid当前不知道

现在Listener包含两个条目，一个默认为localhost，我们必须添加第二个条目，其中包含服务器机器IP。通过此项，服务器计算机上的数据库可以侦听包含此IP地址的连接，这些连接将连接到服务器数据库。否则，数据库将不会连接

注意：您可以使用这些配置，但不要忘记更改IP和oracle_主路径

tnsnames.ora文件用于定义任何数据库参数（SID、端口、主机）的别名。但并不强制更改tnsnames.ora以连接服务器和客户端，所以我不会修改位于服务器机器上的tnsnames.ora

计算机B tnsnames.ora与上述问题相同。 Computer B listener.ora与上述问题相同

总结： 您只需更改位于服务器计算机（Oracle_home/network/admin/）上的listener.ora文件，并添加两个条目，一个在SID_LIST_listener中添加SID详细信息，另一个在listener中添加机器IP描述

还要检查环境变量（ORACLE_UNQNAME、ORACLE_SID、ORACLE_HOME、TNS_ADMIN等）

还有一件更重要的事情，您必须检查侦听器服务是否已启动并正在运行 使用以下命令（打开CMD并键入）：

**lsnrctl状态**

**lsnrctl启动**

**lsnrctl停止**

---

当您更改listener.ora文件时，您必须停止然后启动lsnrctl服务，以使更改生效。

我遇到了很多相同的问题，但Oracle 12C有很多问题。最终得到了几乎相似的解决方案

我的数据库服务器位于192.168.1.165上，端口为1526。 还必须在Windows服务器防火墙中打开端口1526

# listener.ora Network Configuration File: G:\app\db12\product\12.1.0\dbhome_1\network\admin\listener.ora # Generated by Oracle configuration tools. SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = CLRExtProc) (ORACLE_HOME = G:\app\db12\product\12.1.0\dbhome_1) (PROGRAM = extproc) (ENVS = "EXTPROC_DLLS=ONLY:G:\app\db12\product\12.1.0\dbhome_1\bin\oraclr12.dll") ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1526)) (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1526)) ) (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1526)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.165)(PORT = 1526)) ) ) #listener.ora网络配置文件：G:\app\db12\product\12.1.0\dbhome\u 1\Network\admin\listener.ora #由Oracle配置工具生成。 SID\u列表\u侦听器= （SID_列表）= （SID_DESC= （SID_NAME=CLRExtProc） （ORACLE\u HOME=G:\app\db12\product\12.1.0\dbhome\u 1） （PROGRAM=extproc） （ENVS=“EXTPROC\u DLLS=ONLY:G:\app\db12\product\12.1.0\dbhome\u 1\bin\oraclr12.dll”） ) ) 听众= （说明和清单= （说明= （地址=（协议=IPC）（键=EXTPROC1526）） （地址=（协议=TCP）（主机=本地主机）（端口=1526）） ) （说明= （地址=（协议=IPC）（键=EXTPROC1526）） （地址=（协议=TCP）（主机=192.168.1.165）（端口=1526）） ) )