linux服务器上以dba身份进入:sqlplus / as sysdba; 依次执行以下命令:shutdown immediate; startup mount; alter system enable restricted session; alter system set job_queue_processes=0; alter system set aq_tm_processes=0; alter database open; alter database character set i…
今天遇到一台服务器22端口正常,但是通过ssh连接的问题.排查了防火墙和端口问题,半天没有找出来原因,后来求助大神,终于明白了通过etc目录下hosts.deny和hosts.allow文件可以限制远程访问,使用方法如下: 修改/etc/hosts.allow文件## hosts.allow This file describes the names of the hosts which are# allowed to use the local INET services, as decide…