今天是个阴天，老天想下不下的，昏昏沉沉的总想睡觉……
额……废话不多说了。
今天中午想做一个catalog库，我就在虚拟机上装了Oracle11g，本想不同于target数据库，
所以当时配置监听时就没有用默认的端口号1521，和平常一样，我也懒得手工创建监听，
netca创建监听，监听名默认名LISTENER，端口号改为1526；
接着就是启动数据库，注册 alter system register，启动监听，[oracle@jibo admin]$ lsnrctl start
查看监听状态：
[oracle@jibo ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 23-SEP-2014 21:25:12
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=jibo)(PORT=1526)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 23-SEP-2014 15:59:46
Uptime 0 days 5 hr. 25 min. 26 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/jibo/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=jibo)(PORT=1526)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1526)))
Services Summary...
Service "PROD" has 1 instance(s).
Instance "PROD", status READY, has 1 handler(s) for this service...
Service "PRODXDB" has 1 instance(s).
Instance "PROD", status READY, has 1 handler(s) for this service...
The command completed successfully
嗯……很好，一切正常；
我就拷贝了一份catalog库的tnsnames.ora到target数据库的tnsnames.ora中，好让target数据库远程访问catalog库；
先测试一下是否可以连通：
sqlplus hr/hr@PROD
(catalog库的服务名我设置为PROD，target库服务名我设置为ORCL )
结果…… 呃I 没通，报错……
我就纳闷了……安装数据库什么的都设置好好的啊，不记得有哪错了……
我想了一下，是catalog库的问题还是target库的问题呢？
不用想，target库一直用的好好的，监听什么的都没有问题，
（我target 主机名Demon ip192.168.1.8/ catalog库主机名 jibo ip192.168.1.4）
检验一下target吧 ，tnsping 192.168.1.4
[oracle@Demon admin]$ tnsping 192.168.1.4
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 00:43:42
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.4)(PORT=1521)))
TNS-12541: TNS:no listener
有错误……没有启动监听？ 不会啊
上面看已经启动了……
再自己tnsping一下;
[oracle@Demon admin]$ tnsping 192.168.1.8
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 00:45:33
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.8)(PORT=1521)))
OK (110 msec)
自己tnsping自己没有问题
再测试一下catalog库
[oracle@jibo ~]$ tnsping 192.168.1.8
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 00:48:02
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.8)(PORT=1521)))
OK (100 msec)
tnsping target库没问题
再自己tnsping自己一下：
[oracle@jibo ~]$ tnsping 192.168.1.4
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 00:48:14
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.4)(PORT=1521)))
TNS-12541: TNS:no listener
额，错误，无监听，查看监听，什么原因呢……
[oracle@jibo admin]$ lsnrctl status listener
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 23-SEP-2014 23:09:33
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=jibo)(PORT=1526)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 23-SEP-2014 23:01:40
Uptime 0 days 0 hr. 7 min. 52 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/jibo/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=jibo)(PORT=1526)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1526)))
Services Summary...
Service "PROD" has 1 instance(s).
Instance "PROD", status READY, has 1 handler(s) for this service...
Service "PRODXDB" has 1 instance(s).
Instance "PROD", status READY, has 1 handler(s) for this service...
The command completed successfully
挺正常啊；catalog库有问题，啥问题呢……
再尝试tnsping 主机名
[oracle@jibo ~]$ tnsping jibo
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 00:51:55
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.4)(PORT=1521)))
TNS-12541: TNS:no listener
错误……
tnsping 服务名 试试……
[oracle@jibo ~]$ tnsping prod
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 00:53:09
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = jibo)(PORT = 1526)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = PROD)))
OK (120 msec)
这个可以啊……那啥问题呢……
难道主机名和ip地址不匹配？
查看 /etc/hosts
[root@jibo ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.1.4 jibo
[root@jibo ~]#
正常啊
重启监听lsnrctl reload
再试试……
仍然报TNS-12541: TNS:no listener错误；查看tnsnames.ora
PROD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = jibo)(PORT = 1526))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PROD)
)
)
LISTENER_PROD =
(ADDRESS = (PROTOCOL = TCP)(HOST = jibo)(PORT = 1526))
在查看listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = jibo)(PORT = 1526))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1526))
)
)
ADR_BASE_LISTENER = /u01/app/oracle
我顿时有些纳闷，为啥netca自动创建的监听中tnsnames.ora和listener.ora的监听名不一样的，难道自动生成还有错不成……
那么在数据库中注册的监听到底用哪个名字啊
我再查看local_listener这个参数
SYS@PROD>show parameter local_listener
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
local_listener string LISTENER_PROD
SYS@PROD>
额，不是我创建的listener的监听名，为什么？
嗯……
哦，我想起来了listener监听名是Oracle默认的监听名，同时默认的监听端口为1521，
我一直tnsping 主机名/Ip时，根据默认监听名，它自动找端口为1521的监听，那当然找不到了……
netstat -pan|grep 1521 就没有启用这个端口……
看来默认监听名不是那么好用的，
我在listener.ora中手动把监听名改为LISTENER_PROD
重启监听 lsnrctl reload LISTENER_PROD
然后再关了默认监听lsnrctl stop
[oracle@jibo ~]$ sqlplus hr/hr@jibo:1526/prod
SQL*Plus: Release 11.2.0.4.0 Production on Wed Sep 24 09:01:14 2014
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
简单连接没问题，说明1526这个端口是可以用的
再tnsping试试
[oracle@jibo admin]$ tnsping 192.168.1.4
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 09:01:28
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.4)(PORT=1521)))
TNS-12541: TNS:no listener
[oracle@jibo admin]$ tnsping jibo
TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 09:01:41
Copyright (c) 1997, 2013, Oracle. All rights reserved.
Used parameter files:
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.4)(PORT=1521)))
TNS-12541: TNS:no listener
[oracle@jibo admin]$
都不行，好像必须走1521这个端口，但默认的已经改了，
还是这个端口……嗯 谁有好的办法让它用1526这个端口的请留言啊……
结果成功了 ，用的是1526的端口；默认配置监听还真是坑……
Oracle中tnsping 主机名/Ip 显示TNS-12541: TNS:no listener
原文地址：http://blog.csdn.net/demonson/article/details/39506215
