Today I learnt
2015-May-22
In Oracle database, dropping a table don't free up the space directly. You'll need to disabled the DB recycle bin. So whenever we drop something, it's purged automatically to free the space.
http://docs.oracle.com/cd/E18283_01/server.112/e17120/tables011.htm
And another minor suggestion about searching Oracle doc on Google. Add 112 to show 11g release 2 doc on top.
Today I learnt的更多相关文章
- [note]What I’ve learnt from working on startups
What I've learnt from working on startups 从失败里学到了什么,六次创业失败. 企业家不是与生俱来的,也是靠学来的. 想的太多,做的太少.
- 学习笔记之三十年软件开发之路 - Things I Learnt The Hard Way (in 30 Years of Software Development)
三十年软件开发之路 https://mp.weixin.qq.com/s/EgN-9bIHonRid1DM0csQDw https://blog.juliobiason.net/thoughts/th ...
- what have we learnt in day five
what is file? virtual unit offered by operation system steps to open file 1.find the file_path(file_ ...
- Lesson 17 Always young
Text My aunt Jennifer is an actress. She must be at least thirty-five years old. In spit of this, sh ...
- Lesson 14 Do you speak English?
Text I had an amusing experience last year. After I had left a small village in the south of France. ...
- How do servlets work-Instantiation, sessions, shared variables and multithreading[reproduced]
When the servletcontainer (like Apache Tomcat) starts up, it will deploy and load all webapplication ...
- Usual tiny skills & solutions
Ubuntu and Win10 - double OS 2016-02-21 Yesterday I helped my friend install Ubuntu (14.04 LTS) on h ...
- Sensitive directory/file Integrity Monitoring and Checking
catalogue . OSSEC . HashSentry: Host-Based IDS in Python . Afick . 检测流程 1. OSSEC OSSEC is an Open So ...
- HDU4787 GRE Words Revenge(AC自动机 分块 合并)
题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=4787 Description Now Coach Pang is preparing for ...
随机推荐
- Python学习路程day17
常用算法与设计模式 选择排序 时间复杂度 二.计算方法 1.一个算法执行所耗费的时间,从理论上是不能算出来的,必须上机运行测试才能知道.但我们不可能也没有必要对每个算法都上机测试,只需知道哪个算法花费 ...
- 未能加载文件或程序集“XXX”或它的某一个依赖项。参数错误。 (异常来自 HRESULT:0x80070057 (E_INVALIDARG))
移除引用,并删除packagede的引用文件.重新导入引用文件和引用~ 如果是电脑异常死机后报这错误, 解决方法 是 删除 C:\WINDOWS\Microsoft.NET\Framework\v4. ...
- Django实现表单验证、CSRF、cookie和session、缓存、数据库多表操作(双下划綫)
通常验证用户输入是否合法的话,是前端js和后端共同验证的,这是因为前端js是可以被禁用的,假如被禁用了,那就没法用js实现验证合法与否了,也就是即使用户输入的不合法,但是也没提示,用户也不知道怎么输入 ...
- Burp Suite 常用功能 0x01 扫描后台
扫描后台: 代理→转到intruder 在链接后面添加变量,变量=后台地址t GET /§后台§ xt 注意: 配置完成点击菜单栏Intruder → start attack 开始扫描.
- Teleport Ultra 下载网页修复
1 三个基本正则替换 tppabs="h[^"]*"/\*tpa=h[^"]*/javascript:if\(confirm\('h[^"]*[Ult ...
- CSS样式-文字超出宽部分用省略号代替
.name {text-overflow: ellipsis;white-space: nowrap;overflow: hidden;display:block;width:120px; }
- System Sounds: Alerts and Sound Effects
#include <AudioToolbox/AudioToolbox.h> #include <CoreFoundation/CoreFoundation.h> // Def ...
- Python-day3作业-haproxy配置文件管理脚本
#!/usr/bin/env python import os,sys,time,re,prettytable,json from collections import defaultdict,Ord ...
- 鼠标焦点变化引起mouseout事件
做了个小手术,渐渐回归网络啦! 问题: 在自制的提示离鼠标太近时,会引起无法提示的功能. 自制提示离图片太近时,提示图片一直一闪一闪的,截图截不出来,就只放改善后的图片(不闪). 原因: 为什么呢?书 ...
- c51
ORG 0000HMOV R7,#08HMOV 83H,#01HMOV R4,#00HAA1:CLR P3.6 CLR P3.4 SETB P3.6 DJNZ R7,AA1AA2:JB P3.0,AA ...