port="6379 3306 27017 4505 4506 24007 24008 49152" #while true #do for i in $port do isexist=`netstat -lntup|||awk '{print $4}'` if [ ! $isexist ];then echo $i ports="$ports $i" fi done echo $ports for i in $ports do nc -lk $i & do
问题1现象 数据导出脚本执行失败,报错如下 ORA-12537 到服务器上查看,报错: [oracle@test ~]$ lsnrctl status LSNRCTL - Production on -APR- :: Copyright (c) , , Oracle. All rights reserved. Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=)) TNS-: TNS:no listener TNS-: TNS:protocol
mysql 启动了,用 localhost 可以连接,但是用 127.0.0.1 不能连接.可能的原因是 1. mysql为了增强安全性而跳过了端口监听,查看方法: 用mysql> SHOW VARIABLES;或者 mysql> SHOW VARIABLES LIKE 'skip_networking'; 查看skip_networking,如果skip_networking=ON ,则到my.ini 中将 skip_networking 注释掉; 2. 如果显示的是 OFF 则可能是绑定了
产看状态命令:lsnrctl status 启动监听:lsnrctl start 关闭监听:lsnrctl stop LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 19-7月 -2008 12:1 1:19 Copyright (c) 1991, 2005, Oracle. All rights reserved. 正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXT