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  Oracle database to execute multiple statements at command line

Oracle database is now a mature and popular RDBMS which is used by lots of enterprises. With its evolution, many utilities and applications are developed around it as well. Now Oracle database also provides cloud support. As a DBA, managing Oracle database is daily routine work and some tools may be used frequently. One of them is sqlplus, the command line tool for executing SQL command. sqlplus is installed while the Oracle database is installed. To start sqlplus, one just needs to open a termi...

   ORACLE,ORACLE DATABASE,SQLPLUS     2016-12-09 20:11:28

  Install Google services on Huawei MatePad

Since the trade war between China and US, lots of services are not allowed to be used on Huawei devices as a series of procedures enforced by US government to restrict China. These services include the Google Play services which are used for downloading Android apps on Android devices. This has brought big trouble to Huawei users as they are not able to download apps available for all other Android devices.  Fortunately, there are ways for people to get Google services installed on Huawei d...

   GOOGLE,PLAY STORE ,HUAWEI MATEPAD     2020-02-02 05:20:43

  On Programming Deadlines

There are a lot of differences between programming, and programming professionally. The most notorious of which, is deadlines.DeadlinesWhen you're writing code for yourself, you can spend as much (or as little time) on it as you please--but when you're writing code for other people, you've got only a limited amount of time and resources to get the job done. In my experience, this typically leads to one of two situations:You've got to extend the deadline to finish the job properly.You've got to w...

   Programming,Deadline,Transparent,Test,TODO     2011-11-01 07:10:21

  Use Memory Analyzer Tool in Eclipse

When developing applications, we often encounter memory issues of an application. To analyze how much memory each class takes, we need to have some specific tools to assist us. One of them is Memory Analyzer Tool on Eclipse. The Eclipse Memory Analyzer is a fast and feature-rich Java heap analyzer that helps you find memory leaks and reduce memory consumption. To use the Memory Analyzer Tool, you first need to install it on Eclipse. You can go to Help -> Install New Software.... Paste  h...

   Memory analyzer tool, Eclipse,heap dump, HPROF     2014-10-28 07:22:35

  5 things my 4-year-old taught me about technology

One of the great things about being a parent is that you get to see how kids use technology. I have a 4 year-old daughter who loves to mess around with my phone, watch videos on YouTube and play Angry Birds.It’s fun to watch her interact with these things, not only because she’s already better at some of the games than me. The really interesting stuff happens when stuff doesn’t work the way she expects it to, or when she finds ways to use tech that I hadn’t thought of...

   Learning,Children,Siri,Voice,Tech,Course     2011-10-26 07:07:48

  Alibaba Cloud was down again just after Singles' Day promotion

On November 12th, several popular Alibaba platforms and services experienced technical issues, causing widespread disruption and becoming hot topics on Weibo, the Chinese equivalent of Twitter. These services include Taobao, Xianyu, DingTalk, Aliyun Drive etc. Users took to social media to report instances of "Taobao crashing." Some encountered code display errors on the shopping page, while others faced a blank screen. However, a few users claimed they were still able to shop without any prob...

   ALIBABA CLOUD,ALIYUN,DOWN     2023-11-12 21:44:16

  Good bye, IE8, Google Apps leaves you

Google Apps team annouced not supporting IE 8 and lower version of IE, this will affect every Google App user including commercial, education and government. The time for leaving IE 8 is 15 November, at that time, IE 10 will be released for a few weeks. Google Apps team explained here: As we announced last year, we support the latest version of Google Chrome (which automatically updates whenever it detects that a new version of the browser is available) as well as the current and prior major re...

   IE8, Google apps     2012-09-17 11:33:00

  Failed merge and acquisition cases in the Internet history

Bebo founder sold Bebo with 850 million US dollars in 2008, but later he bought it back with just 1 million US dollars. This news lets us think about those failed merge and acquisition cases in Internet history. Let's summarize some of them here. 1. Bebo Buyer : AOL Acquisition price : 650 million US dollars Sold price : 1 million US dollars Loss: 849 million US dollars In 2008, AOL was still belong to Time Warner. It made a decision to acquire the third largest social networking site Bebo, The...

   Merge and acquisition,Loss,MySpace     2013-07-03 08:37:13

  QScrollArea Scrollbar Display Solution

Qt framework is a popular C++ GUI framework developed by Nokia. And it is also cross platform compatible. Many developers are using Qt to develop C++ GUI programs. In Qt, some important components are deserved our close attention. Many developers faced the problem when they put some widgets in a QScrollArea widget and they want it to display scroll bars when the widgets inside the QScrollArea overflows. After many experiments, I propose a way which can show scroll bars as you expected. The...

   C++,Qt,GUI,QScrollBar,ScrollBar,Not display,Solution     2012-03-03 07:48:36

  Fix issue "cannot load such file -- bcrypt_ext (LoadError)"

bcrypt() is a sophisticated and secure hash algorithm designed by The OpenBSD project for hashing passwords. The bcrypt Ruby gem provides a simple wrapper for safely handling passwords. However, sometimes the rails application would fail to start after installing the bcrypt gem on Windows. The error would look similar to below. The issue is that it fails to load the bcrypt_ext which is the native built extension, the reason may be the library is wrongly built. To fix this issue, below steps can...

   RUBY,SOLUTION,RUBY ON RAILS,BCRYPT,LOAD ERROR     2017-03-05 00:21:10

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