在之前的Blog中有三篇文章提到了Oracle的监听，如下：

OracleListener 动态注册 与 静态注册

http://blog.csdn.net/tianlesoftware/article/details/5543166

Oracle 监听(Listener) 中 services 说明

http://blog.csdn.net/tianlesoftware/article/details/6617827

Oracle 数据库监听配置

http://blog.csdn.net/tianlesoftware/article/details/4861572

Oracle的监听(Listener)在缺省情况下，会在文件中记录日志，记录数据库实例注册操作、客户端的连接等。

Oracle 11g中的信息如下：

[oracle@dave ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.3.0 - Productionon 22-DEC-2012 21:36:43

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.4)(PORT=1521)))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version11.2.0.3.0 - Production

Start Date                22-DEC-2012 21:31:53

Uptime                    0 days 0 hr. 4 min. 50 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/dave/listener/alert/log.xml

Listening Endpoints Summary...

 (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.4)(PORT=1521)))

Services Summary...

Service "dave" has 2 instance(s).

 Instance "dave", status UNKNOWN, has 1 handler(s) for thisservice...

 Instance "dave", status READY, has 1 handler(s) for thisservice...

Service "daveXDB" has 1instance(s).

 Instance "dave", status READY, has 1 handler(s) for thisservice...

The command completed successfully

这个是Oracle 11g里的listener 的保存位置。在Oracle 11g中使用的是ADR，关于ADR 参考：

Oracle 11g 新特性 -- 自动诊断资料档案库(ADR) 说明

http://blog.csdn.net/tianlesoftware/article/details/8222724

这里是个xml文件，不方便文件，我们可以去trace目录下，看文本格式的：

[oracle@dave trace]$ pwd

/u01/app/oracle/diag/tnslsnr/dave/listener/trace

[oracle@dave trace]$ ls

listener.log

[oracle@dave trace]$

[oracle@dave trace]$ tail -20 listener.log

Sat Dec 22 21:33:39 2012

22-DEC-2012 21:33:39 * service_update *dave * 0

22-DEC-2012 21:33:42 * service_update *dave * 0

22-DEC-2012 21:33:45 * service_update *dave * 0

Sat Dec 22 21:34:18 2012

22-DEC-2012 21:34:18 * service_update *dave * 0

22-DEC-2012 21:34:21 * service_update *dave * 0

22-DEC-2012 21:34:24 * service_update *dave * 0

22-DEC-2012 21:34:27 * service_update *dave * 0

Sat Dec 22 21:34:48 2012

22-DEC-2012 21:34:48 * service_update *dave * 0

Sat Dec 22 21:35:06 2012

22-DEC-2012 21:35:06 * service_update *dave * 0

Sat Dec 22 21:36:18 2012

22-DEC-2012 21:36:18 * service_update *dave * 0

Sat Dec 22 21:36:43 2012

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