Java发https请求证书问题 URL url = new URL( "https://localhost:8443"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequest
oracle常用命令 第一章:日志管理1.forcinglogswitchessql>altersystemswitchlogfile;2.forcingcheckpointssql>altersystemcheckpoint;3.addingonlineredologgroupssql>alterdatabaseadd