环境：
os: redhat linux as 4
database: oracle10g
成功安装后，启动时报错。
报错信息是ORA-12541:TNS:no listener.
这个报错这么解决。请高手指教。我是这样启动的
sqlplus /nolog
connect system/sdtsg@ora10g
然后报错：ORA-12541:TNS:no listener.谢谢，小弟在线等。
os: redhat linux as 4
database: oracle10g
成功安装后，启动时报错。
报错信息是ORA-12541:TNS:no listener.
这个报错这么解决。请高手指教。我是这样启动的
sqlplus /nolog
connect system/sdtsg@ora10g
然后报错：ORA-12541:TNS:no listener.谢谢，小弟在线等。
用lsnrctl status查看一下2. ora10g你建立的net service名称么？
用tnsping ora10g看看能否ping通
要用时再启动监听服务和数据库服务。
同楼上所说的，也可以netstat -an看看有1521的监听端口吗
1. 你确定listener启动了么？
用lsnrctl status查看一下提示信息:
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 25-JUN-2010 09:38:05Copyright (c) 1991, 2005, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=sdtsg)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
报了什么错误?又是怎么处理?
谢谢
2. ora10g你建立的net service名称么？
用tnsping ora10g看看能否ping通tnsping ora10g提示信息:
TNS Ping Utility for Linux: Version 10.2.0.1.0 - Production on 25-JUN-2010 09:41:08Copyright (c) 1997, 2005, Oracle. All rights reserved.Used parameter files:
/home/oracle/product/10.2.0/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = sdtsg)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = ora10g)))
TNS-12541: TNS:no listener
报了什么错误?又是怎么处理?
谢谢
要用oracle安装用户登录运行，一般是oracle
用netca进入Oracle Net Configuration Assitant创建一个吧。
[oracle@sdtsg bin]$ sqlplus / as sysdbaSQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 25 09:53:30 2010Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining optionsSQL> startup
ORA-01081: cannot start already-running ORACLE - shut it down first
SQL> connect system/sdtsg@ora10g
ERROR:
ORA-12541: TNS:no listener
Warning: You are no longer connected to ORACLE.
谢谢
试用了您的方法,如下 :
[oracle@sdtsg bin]$ lsnrctl startLSNRCTL for Linux: Version 10.2.0.1.0 - Production on 25-JUN-2010 09:55:56Copyright (c) 1991, 2005, Oracle. All rights reserved.Starting /home/oracle/product/10.2.0/bin/tnslsnr: please wait...TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
TNS-00507: Connection closed
Linux Error: 29: Illegal seek
谢谢.
[oracle@sdtsg bin]$ sqlplus / as sysdbaSQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 25 09:53:30 2010Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining optionsSQL> startup
ORA-01081: cannot start already-running ORACLE - shut it down first以上说明已经有个oracle实例开启了。
用
show parameter db_name
看看是那个实例？
以上说明已经有个oracle实例开启了。
用
show parameter db_name
看看是那个实例？
按照您的提示,运行了show parameter db_name
SQL> show parameter db_nameNAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_name string ora10g
实例名:ora10g
接下来怎么处理?谢谢!
这你根据什么来的？这根本就不是无法启动的问题。如果你的账号密码没错的话，那必然是@ora10g 问题，我估计你根本就没有配置ora10g这个netservice，瞎用。如果你是自己用的话，直接connect / as sysdba; startup; 就启动你刚刚安装的oracle了。
如果你是要连别的已经启动的局域网里的oracle服务器，先配置netservice，然后再连。
执行
alter user scott account unlock;
alter user scott identified by your_password;conn scott/your_password
看看能正常进入scott方案没？
我是这样用的.
我搭建的redhat linux as 4 + oracle10G 是服务器,小组成员客户端连接该oracle服务器.
当然客户端连接oracle服务器,先配置netservice，然后再连。
但是服务端监听器起动不了,怎么连接oracle服务器呢
问题就出在:ORA-12541:TNS:no listener.
期待您的指教.
这里的@ora10g不需要，在本机上，实际上你的oracle已经起来了。
直接在SQL>下 conn system/sdtsg即可
[oracle@sdtsg bin]$ sqlplus / as sysdbaSQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 25 10:25:43 2010Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining optionsSQL> alter user scott account unlock
2 ;User altered.SQL> alter user scott identified by sdtsg;User altered.SQL> conn scott/sdtsg
Connected.
谢谢.
ORA-12541:TNS:no listener.监听器无法打开.
listener.ora信息如下:
# listener.ora Network Configuration File: /home/oracle/product/10.2.0/network/admin/listener.ora
# Generated by Oracle configuration tools.SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /home/oracle/product/10.2.0)
(PROGRAM = extproc)
)
)LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = sdtsg)(PORT = 1521))
)
)
# tnsnames.ora Network Configuration File: /home/oracle/product/10.2.0/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.ORA10G =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = sdtsg)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ora10g)
)
)EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
# sqlnet.ora Network Configuration File: /home/oracle/product/10.2.0/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
192.168.2.125 sdtsg fengqingshou
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = sdtsg)(PORT = 1521))
)
)
把上面的sdtsg改成ip地址试一下吧
[oracle@sdtsg bin]$ netcaOracle Net Services Configuration:
Configuring Listener:MYLISTENER
Listener configuration complete.
Oracle Net Listener Startup:
Running Listener Control:
/home/oracle/product/10.2.0/bin/lsnrctl start MYLISTENER
Listener Control complete.
Listener start failed. Listener may already be running.
Oracle Net Services configuration successful. The exit code is 0
还是不行.指点指点.谢谢!
要不先把之前的所有listener删除掉，要不在另外的端口上创建listener