Oracle中tnsping 主机名/Ip 显示TNS-12541: TNS:no listener

浏览数：42 / 时间：2015年06月12日

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

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

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

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

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

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

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

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

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

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

Used parameter files:

TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 24-SEP-2014 09:01:41

Used parameter files:

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……

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