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April 2015

DBAKevlar at Collaborate 2015

Here’s a quick guide to my schedule of sessions at IOUG Collaborate 2015 for this year.

Data Cloning and Refresh

For some time now, I’ve been creating blog posts that walk you through using some of the Enterprise Manager technology to perform specific tasks. For example, there’s one here on setting up Chargeback in EM 12.1.0.4. I’ve never been really satisfied with the way these blog posts turn out, as to document a step by step process like this takes lots of screenshots and you end up with a post that’s a mile long. It also gives the impression that doing something can be quite complex, when in fact it might only take a few minutes to perform all those steps.

Tuning Database XQuery Statements (2)

So we concluded the post “Tuning Database XQuery Statements (1)” with the following SQL statement…

Oaktable World Las Vegas April 15, 2015 at Collaborate

oaktableworld_lasvegas1

 

Wednesday April 15 at Collaborate 2015 Las Vegas room Mandalay K
For more information see Pythian’s Blog post.

Screen Shot 2015-04-08 at 10.03.53 AM

 

Hey dude, where’s my memory? part 2

In my previous article I started exploring the memory usage of a process on a recent linux kernel (2.6.39-400.243.1 (UEK2)), recent means “recent for the Enterprise Linux distributions” in this context, linux kernel developers would point out that the kernel itself is at version 3.19 (“stable version” at the time of writing of this blogpost).

Tuning Database XQuery Statements (1)

I had a question of a colleague to have a look at a statement that…

ORA-31145 – “Duplicate listener, %s, found in resource configuration”

Today I had an error on my test environment which surprised me…initially… While I was…

The Rise and Fall of the NoSQL Empire (2007–2013)

The NoSQL camp put performance, scalability, and reliability front and center but lost the opportunity to take the relational model to the next level because—just like the relational camp—it mistakenly believed that normalization dictates physical storage choices, that non-relational APIs are forbidden by the relational model, and that “relational” is synonymous with ACID (Atomicity, Consistency, Isolation, and Durability). The NoSQL camp created a number of innovations: functional segmentation, sharding, replication, eventual consistency, and schemaless design. Since these innovations are compatible with the relational model, they will eventually be absorbed by mainstream database management systems.(read more)

Jay Whaaaat?<br#x3E;The Magic of jQuery in Squarespace

jQuery is a powerful JavaScript framework by which to examine a page's HTML
and add new content or change the page's structure. Use it with site
generators such as Squarespace to make design...



Read the full post at www.gennick.com/database.

Jay Whaaaat?<br#x3E;The Magic of jQuery in Squarespace

jQuery is a framework allowing you to write easy snippets of JavaScript to change a website's content and structure. It's especially helpful with Squarespace because of its expressive power enabling you to change the underlying CSS and HTML that Squarespace generates on your behalf, that is otherwise untouchable without taking your entire site into Developer Mode.