ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务

[align=center]ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务[/align]

在安装完Oracle10g后，使用PL/SQL工具连接，提示如下的问题：

ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务



解决办法是手动修改监听配置文件：

# listener.ora Network Configuration File: d:\oracle\product\10.2.0\client_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = d:\oracle\product\10.2.0\client_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = G:\oracle\product\10.2.0\db_1)
(SID_NAME = ORCL)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.100)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
)
)

其中红色粗体部分是添加部分。

以上是在一台机器上既安装了Oracle服务器，又安装了客户端的情况。

下面是仅仅在一台机器上安装了服务器，并且是在服务器本机上安装PLSQL使用Oracle数据库的情况：

# listener.ora Network Configuration File: E:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
(SID_NAME = ORCL)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)

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