[故障|监听]TNS-12518.TNS-00517和 Linux Error:32:Broken pipe 1.1 BLOG文档结构图 1.2 前言部分 1.2.1 导读和注意事项 各位技术爱好者,看完本文后,你可以掌握如下的技能,也可以学到一些其它你所不知道的知识,~O(∩_∩)O~: ① Linux Error: 32: Broken pipe的可能原因(重点) ② TNS-12518: TNS:listener could not hand off client connectio…
最近一周,有一台ORACLE数据库服务器的监听服务在凌晨2点过几分的时间点突然崩溃,以前从没有出现过此类情况,但是最近一周出现了两次这种情况,检查时发现了如下一些信息: $ lsnrctl services LSNRCTL for Linux: Version 10.2.0.4.0 - Production on 12-DEC-2014 08:22:34 Copyright (c) 1991, 2007, Oracle. All rights reserved. Connectin…
Differentiate between inheritance of interface and inheritance of implementation. 行为含义 声明一个pure virtual函数得目的是为了让derived classes只继承函数接口. (你必须提供一个接口,但我不干涉你如何实现它) class Shape { virtual void draw() = 0; }; ... Shape *ps1 = new Rectangle; ps1->Shape::draw…
145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145. Find the sum of all numbers which are equal to the sum of the factorial of their digits. Note: as 1! = 1 and 2! = 2 are not sums they are not included. #include <iostream> #include <v…