C:\>lsnrctl status

LSNRCTL for 64-bit Windows: Version 11.1.0.7.0 - Production on 12-11月-2012 18:1
8:32

Copyright (c) 1991, 2008, Oracle. All rights reserved.

正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.10.203.218)(PORT=1521)))
TNS-12541: TNS: 无监听程序
TNS-12560: TNS: 协议适配器错误
TNS-00511: 无监听程序
64-bit Windows Error: 61: Unknown error
正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))

Oracle一个BUG，BUG号为9879101 : THE CONNECT THROUGH LISTENER WAS SLOW WHEN LISTNER LOG GROWED 4GB。TNS-12541: TNS: 无监听程序 TNS-12560: TNS: 协议适配器错误 TNS-00511: 无监听程序_oracle

You can solve this problem by deleting the large listener in $ORACLE_BASE\diag\tnslsnr\<hostname>\listener\trace\<listener_name>.log
1)  Stop the listener process using the command line or Control Panel Service.
比如: D:\app\Administrator\diag\tnslsnr\GitServer\listener\trace
2) Delete the log file(s) that are at or approaching the 4G size limit at this location:
$ORACLE_BASE\diag\tnslsnr\<hostname>\listener\trace\<listener_name>.log
3)  Issue any lsnrctl command and you will see a new listener.log in its place under:
$ORACLE_BASE\diag\tnslsnr\<hostname>\listener\trace\

cmd> lsnrctl start
cmd> lsnrctl status
 

命令行输入  

lsnrctl  

status

#查看日志状态
show log_status

#关闭日志
set log_status off

#打开日志
set log_status on

show log_status