配置好listener.ora与tnsnames.ora后，执行启动监听命令后，报如下错误：
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[Oracle@gc1 admin]$ lsnrctl start

LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 25-APR-2014 23:27:57

Copyright (c) 1991, 2005, Oracle. All rights reserved.

Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 10.2.0.1.0 - Production


System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
 
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
 
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1521)))


 


Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1521)))


TNS-12560: TNS:protocol adapter error


 TNS-00530: Protocol adapter error


  Linux Error: 113: No route to host


 




listener.ora与tnsnames.ora中配置内容如下：


[oracle@gc1 admin]$ more listener.ora


LISTENER=


  (DESCRIPTION=


    (ADDRESS_LIST=


      (ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1521))


    )


  )


SID_LIST_LISTENER=


  (SID_LIST=


    (SID_DESC=


      (SID_NAME=PROD)


      (ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1)


      (GLOBAL_DBNAME=PROD)


    )


    (SID_DESC=


      (SID_NAME=EMREP)


      (ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1)


      (GLOBAL_DBNAME=EMREP)


    )


  )


 


LSNR2=


  (DESCRIPTION=


    (ADDRESS_LIST=


      (ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1526))


      (ADDRESS=(PROTOCOL=ipc)(KEY=extproc))


    )


  )


SID_LIST_LSNR2=


  (SID_LIST=


    (SID_DESC=


      (SID_NAME=plsextproc)


      (ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1)


      (PROGRAM=extproc)


    )


  )


[oracle@gc1 admin]$ more tnsnames.ora


prod=


 (DESCRIPTION=


  (ADDRESS= (PROTOCOL=tcp)(HOST=gc1)(PORT=1521))


  (CONNECT_DATA=


    (SERVICE_NAME=PROD)


    (SERVER=dedicated)


  )


 )


 


prod_s=


 (DESCRIPTION=


  (ADDRESS= (PROTOCOL=tcp)(HOST=gc1)(PORT=1526))


  (CONNECT_DATA=


    (SERVICE_NAME=PROD)


    (SERVER=shared)


  )


 )


 


lsnr2=


 (DESCRIPTION=


  (ADDRESS= (PROTOCOL=tcp)(HOST=gc1)(PORT=1526))


  (CONNECT_DATA=


    (SERVICE_NAME=PROD)


    (SERVER=dedicated)


  )


 )


 


emrep=


 (DESCRIPTION=


  (ADDRESS= (PROTOCOL=tcp)(HOST=gc2)(PORT=1521))


  (CONNECT_DATA=


    (SERVICE_NAME=emrep)


    (SERVER=dedicated)


  )


 )


 


racdb=


 (DESCRIPTION=


  (LOAD_BALANCE=on)


  (FAILOVER=on)


  (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.10)(PORT=1521))


  (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.11)(PORT=1521))


  (CONNECT_DATA=(SERVICE_NAME=RACDB))


 )


仔细检查这二配置文件，无语法错误。且tns文件都是使用主机名进行连接，怀疑可能/etc/hosts中ip配置有问题。


--查看/etc/hosts内容


[oracle@gc1 admin]$ vi /etc/hosts


 


# Do not remove the following line, or various programs


# that require network functionality will fail.


# Do not remove the following line, or various programs


# that require network functionality will fail.


# Do not remove the following line, or various programs


# that require network functionality will fail.


127.0.0.1 node1 localhost.localdomain localhost


::1 localhost6.localdomain6 localhost6


192.168.188.116 gc1


192.168.8.115 gc2


--查看当前系统ip


[root@gc1 ~]# ifconfig


eth0 Link encap:Ethernet HWaddr 00:0C:29:F2:07:49


          inet addr:10.1.55.129 Bcast:10.1.55.255 Mask:255.255.255.0


          inet6 addr: fe80::20c:29ff:fef2:749/64 Scope:Link


          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1


          RX packets:15906 errors:0 dropped:0 overruns:0 frame:0


          TX packets:2524 errors:0 dropped:0 overruns:0 carrier:0


          collisions:0 txqueuelen:1000


          RX bytes:1438926 (1.3 MiB) TX bytes:305470 (298.3 KiB)


          Interrupt:67 Base address:0x2000


 


lo Link encap:Local Loopback


          inet addr:127.0.0.1 Mask:255.0.0.0


          inet6 addr: ::1/128 Scope:Host


          UP LOOPBACK RUNNING MTU:16436 Metric:1


          RX packets:414 errors:0 dropped:0 overruns:0 frame:0


          TX packets:414 errors:0 dropped:0 overruns:0 carrier:0


          collisions:0 txqueuelen:0


          RX bytes:21738 (21.2 KiB) TX bytes:21738 (21.2 KiB)


这二ip不同，于是root用户修改/etc/hosts中ip地址信息，如下：


[oracle@gc1 oradata]$ su - root


Password:


[root@gc1 ~]# vi /etc/hosts


 


# Do not remove the following line, or various programs


# that require network functionality will fail.


127.0.0.1 node1 localhost.localdomain localhost


::1 localhost6.localdomain6 localhost6


# 192.168.188.116


10.1.55.129 gc1


192.168.8.115 gc2


修改保存后，再启动监听，成功


[oracle@gc1 ~]$ lsnrctl start


 


LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 25-APR-2014 23:38:00


 


Copyright (c) 1991, 2005, Oracle. All rights reserved.


 


Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...


 


TNSLSNR for Linux: Version 10.2.0.1.0 - Production


System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
 
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
 
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1521)))


 


Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1521)))


STATUS of the LISTENER


------------------------


Alias LISTENER


Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production


Start Date 25-APR-2014 23:38:00


Uptime 0 days 0 hr. 0 min. 0 sec


Trace Level off


Security ON: Local OS Authentication


SNMP OFF


Listener Parameter File /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
 
Listener Log File /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log


Listening Endpoints Summary...


  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gc1)(PORT=1521)))


Services Summary...


Service "EMREP" has 1 instance(s).


  Instance "EMREP", status UNKNOWN, has 1 handler(s) for this service...


Service "PROD" has 1 instance(s).


  Instance "PROD", status UNKNOWN, has 1 handler(s) for this service...


The command completed successfully