ORACLE11g ORA 12514 TNS 监听程序当前无法识别连接描述符中请求的服务

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1、TNS连接错误

同事跟我说连接oracle数据库报错ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务，如下所示：

 

 

2、查看本地TNSPING

查看本地的tns配置：

WXX =      (DESCRIPTION =        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.121.58)(PORT = 1521))        (CONNECT_DATA =          (SERVER = DEDICATED)          (SERVICE_NAME = orcl)        )   )

 

 

查看本地的tnsping是ok的

C:\Users\Administrator>tnsping WXX       TNS Ping Utility for 32-bit Windows:  Version 11.2.0.1.0 - Production on 26-10月-2016 11:31:04       Copyright (c) 1997, 2010, Oracle.  All rights reserved.       已使用的参数文件:   D:\app\Administrator\product\11.2.0\client_2\network\admin\sqlnet.ora           已使用 TNSNAMES 适配器来解析别名   尝试连接 (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.121.58)(PORT  = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))   OK (30 毫秒)       C:\Users\Administrator>

 

 

本地的tnsping暂时看来是正常的，是ok的。

 

 

 

3、查看网络连接

telnet  192.168.121.58 1521，也是能进去的，证明网络ok

 

oracle服务器的iptables也是关闭的

 

 

文章来源地址：http://blog.csdn.net/mchdba/article/details/52949382 ，博主mchdba（黄杉）谢绝转载。

4、查看服务器的lsnrctl服务

 

去服务器看lsnrctl状态：

[oracle@iZ23vluqpmmZ admin]$ lsnrctl  status       LSNRCTL for Linux: Version 11.2.0.1.0 -  Production on 26-OCT-2016 11:33:32       Copyright (c) 1991, 2009, Oracle.  All rights reserved.       Connecting to  (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))   STATUS of the LISTENER   ------------------------   Alias                     LISTENER   Version                   TNSLSNR for Linux: Version  11.2.0.1.0 - Production   Start Date                26-OCT-2016 11:09:33   Uptime                    0 days 0 hr. 23 min. 59  sec   Trace Level               off   Security                  ON: Local OS Authentication   SNMP                      OFF   Listener Parameter File    /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora   Listener Log File          /usr/oracle/app/diag/tnslsnr/iZ23vluqpmmZ/listener/alert/log.xml   Listening Endpoints Summary...      (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.121.58)(PORT=1521)))   The listener supports no services   The command completed successfully   [oracle@iZ23vluqpmmZ admin]$

 

看到no services，也就是说lsnrctl监听服务启动起来，没有任何oracle实例的，所以问题就来了，没有oracle实例，客户端通过lsnrctl监听的话，就连接不到实例信息。所以这里我们需要添加实例信息，添加实例信息，就在listener.ora配置文件里面。

 

 

 

5、在listener.ora里面添加实例信息

完善listener.ora配置：

[oracle@iZ23vluqpmmZ admin]$ cp  listener.ora z_listener.ora.bak   [oracle@iZ23vluqpmmZ admin]$ vim  listener.ora   [oracle@iZ23vluqpmmZ admin]$   [oracle@iZ23vluqpmmZ admin]$ more  listener.ora   # listener.ora Network Configuration  File: /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora   # Generated by Oracle configuration  tools.       LISTENER =      (DESCRIPTION_LIST =        (DESCRIPTION =          (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))          (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.121.58)(PORT = 1521))        )     ) #  下面就是添加的新实例信息   SID_LIST_LISTENER  =    (SID_LIST =      (SID_DESC =       (GLOBAL_DBNAME = orcl)     (SID_NAME = orcl)     )   )       ADR_BASE_LISTENER = /usr/oracle/app       [oracle@iZ23vluqpmmZ admin]$

 

 

设置完后，重启监听lsnrctl服务，可以看到会有一个instance服务启动起来了：

[oracle@iZ23vluqpmmZ admin]$ lsnrctl stop       LSNRCTL for Linux: Version 11.2.0.1.0 -  Production on 26-OCT-2016 11:38:29       Copyright (c) 1991, 2009, Oracle.  All rights reserved.       Connecting to  (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))   The command completed successfully   [oracle@iZ23vluqpmmZ admin]$ lsnrctl  start       LSNRCTL for Linux: Version 11.2.0.1.0 -  Production on 26-OCT-2016 11:38:33       Copyright (c) 1991, 2009, Oracle.  All rights reserved.       Starting  /usr/oracle/app/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...       TNSLSNR for Linux: Version 11.2.0.1.0 -  Production   System parameter file is  /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora   Log messages written to  /usr/oracle/app/diag/tnslsnr/iZ23vluqpmmZ/listener/alert/log.xml   Listening on:  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))   Listening on:  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.75.58)(PORT=1521)))       Connecting to  (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))   STATUS of the LISTENER   ------------------------   Alias                     LISTENER   Version                   TNSLSNR for Linux: Version 11.2.0.1.0  - Production   Start Date                26-OCT-2016 11:38:33   Uptime                    0 days 0 hr. 1 min. 3 sec   Trace Level               off   Security                  ON: Local OS Authentication   SNMP                      OFF   Listener Parameter File    /usr/oracle/app/product/11.2.0/dbhome_1/network/admin/listener.ora   Listener Log File          /usr/oracle/app/diag/tnslsnr/iZ23vluqpmmZ/listener/alert/log.xml   Listening Endpoints Summary...      (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.75.58)(PORT=1521)))   Services Summary...   Service  "orcl" has 1 instance(s).      Instance "orcl", status UNKNOWN, has 1 handler(s) for this  service...   The command completed successfully   [oracle@iZ23vluqpmmZ admin]$

 

 

OK，在问下同事，同事说能连接上了，问题解决。

           

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