(Chris) We always hear about the power and compression ratio of tabular databases and Power Pivot, and how the Vertipaq compression engine can compress things up to 90% of what their source is. But, this opens up a lot of questions. For example, how can we properly size our tabular hardware solution
Author: SSWUG Research
Raising the Availability Bar
(Robert Catterall) Jeff Josten, IBM distinguished engineer and the chief architect of the IBM® DB2® for z/OS® enterprise data server, speaks often of his team’s relentless focus on “raising the bar.” But on what is the bar being raised? Josten means raising it on everything that makes DB2 for z/OS h
A Tale of Two Connections
(Ian Bjorhovde) It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter […]
WPF Text Input Controls – PasswordBox
(Richard Carr) The fifty-second part of the Windows Presentation Foundation Fundamentals tutorial describes the PasswordBox. This control permits the user to enter a password, or other secret information, in a secure manner.
Characters you should never ever use in an object or schema name!
(Kenneth Fisher) You can put pretty much any character you want into an object or schema name by enclosing the name in []‘s. This does not however mean that you should. There are two specific cases that I’ve seen that are in general a bad idea.
12c : DDL log does not identify the source PDB
(Anju Garg) In 12c, the location of DDL logs has changed from alert log to DDL log.
Combat with an enqueue wait event (enq: HW–Contention)
(Bobby Curtis) Recently I’ve been combating a high water mark enqueue wait (enq: HW – contention) on a single node within an Exadata I’m supporting. I first noticed the wait when I was looking at the performance page for the node in Oracle Enterprise Manager 12c. What I noticed was the a lot of b
12c MATCH_RECOGNIZE: Grouping sequences
(stewashton) The Tabibitosan method by Aketi Jyuuzou is a very clever and efficient way to group rows with consecutive values. When it solves the problem, it can’t be beat — unless you have 12c. This method is worth explaining in its own right, so I’ll do my best; then I’ll make it easier with the M
Perf Test your jQuery Selectors using jsPerf
(Suprotim Agarwal) In recent years, Developers have started focusing on client-side performance, which essentially means testing your JavaScript code. One way to improve client-side code is to test blocks of code and optimize it. jsPerf.com provides a simple way to test the performance of JavaScript
Understanding HTML Helpers in ASP.NET MVC
(Shailendra Chauhan) An HTML Helper is just a method that returns a HTML string. The string can represent any type of content that you want. For example, you can use HTML Helpers to render standard HTML tags like HTML , and tags etc.