ORA-12541:TNS:无监听程序”错误解决
外地回来，登录pl/sql出现错误：ORA-12541:TNS:无监听程序。
1. 检查oracleproduct10.1.0db_1NETWORKloglistener.log：
TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Production on 04-1月 -2010 13:38:34
Copyright (c) 1991, 2004, Oracle. All rights reserved.
系统参数文件为D:oracleproduct10.1.0db_1networkadminlistener.ora
写入D:oracleproduct10.1.0db_1networkloglistener.log的日志信息
写入D:oracleproduct10.1.0db_1networktracelistener.trc的跟踪信息
跟踪级别当前为0
以 pid=7180 开始
监听: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\.pipeEXTPROCipc)))
监听该对象时出错: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=pc-xxx.mail.yyy.cn)(PORT=1521)))
TNS-12542: TNS: 地址已被占用
TNS-12560: TNS: 协议适配器错误
TNS-00512: 地址已在使用
32-bit Windows Error: 48: Unknown error
不再监听: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\.pipeEXTPROCipc)))
2. Oracle的listener已经启动。
3. 查看oracleproduct10.1.0db_1NETWORKADMINlistener.ora
# listener.ora Network Configuration File: D:oracleproduct10.1.0db_1networkadminlistener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:oracleproduct10.1.0db_1)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = pc-xxx.mail.yyy.cn)(PORT = 1521))
)
)
)
把(ADDRESS = (PROTOCOL = TCP)(HOST = pc-xxx.mail.yyy.cn)(PORT = 1521))
改为(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
pc-xxx.mail.yyy.cn是计算机名
127.0.0.1也就是目前数据库正在用的ip地址。
4. 查看oracleproduct10.1.0db_1NETWORKADMINtnsnames.ora
找到下列语句：
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = pc-xxx.mail.yyy.cn)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
将(ADDRESS = (PROTOCOL = TCP)(HOST = pc-xxx.mail.yyy.cn)(PORT = 1521))
改为(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
5. 关闭后再启动listener
运行->cmd启动dos窗口，执行lsnrctl stop关闭，lsnrctl start启动。