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5 in 5 - 5 Oracle visualizations in 5 months...

It is time for me to get my rear in gear. I have tons of notes floating around on Oracle administration and performance related visualizations I would like to work on but without a deadline things start dragging out... Like when you have a weight loss or stop smoking goal that becomes real when you tell people about it.

Slides and Examples for Time for Some New Graphs...

I gave my talk "Time for Some New Graphs: Incorporating Time and Animation Elements into Your Web App Visualizations" at KScope14 this week. As usual KScope has delivered on content and experts. I have been enjoying immersing myself in the Administration and Apex tracks.

Here are the slides to my presentation : Time For Some New Graphs - Slides

Slides and Scripts for Data Auditing in Oracle

I am currently getting my mind blown by Craig Shallahamer's Oracle Conference on the James presentation on Detailing Oracle CPU Consumption... But earlier today I was able to give my talk on Oracle Data Auditing... Well minus the demos because I need to get better about cutting out slides.

Here are the links to the slides: DataAuditingConceptsAndImplementation.pdf

Live Coding with JavaScript

I have been messing around in JavaScript and d3.js a bit more than usual lately.

In the past my JavaScript prototyping environment was a collection of html/js/json files on my local disk and a basic HTTP server (like python SimpleHTTPServer). I would edit files and reload reload reload reload. Very tiresome. Not very "2014" if you ask me.

Well I have seen the light, there are a few ways to skin this cat and get into a more robust and interactive development environment.

Oracle Flashback Archive Licensing Info...

As the licensing of the Oracle Flashback Features has changed over recent releases I wanted to provide a summary. In 12c Oracle has opened up basic usage of Flashback Data Archive which is a handy way to add data archiving capabilities to existing/legacy applications.
The cost part of Flashback Data Archive is now an Optimization feature which reportedly will reduce the disk space requirements by 2-4 times. This requires an Advanced Compression license to use.

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A Delta to Plus/Delta... Good / Tricky / Different...

I have been encountering a lot of Plus/Delta activity at the end of my meetings and projects. Basically it is an informal feedback mechanism. A chance to communicate 1) what was good about the meeting and 2) what may need to be changed in the future.

I can appreciate the sentiment. Just having a project or meeting leader ask for the feedback is a great step forward in improving processes. One of my group leaders took it a step further though when applying it to tasks or projects.

Application Express and Open Source Graphing Libraries

This is my v2 of a presentation on ideas for going beyond the Application Express default graphs and info on 3 popular Javascript graphing libraries that can be incorporated into Apex Applications.

2013-06-DavidMann-ExploreNewDataDimensionsWithApexAndFOSSGraphingLibraries.pdf

A Brief Brief about a Brief KScope13 Visit...

Due to some unforeseen circumstances I was unable to spend as much time as I would have liked at KScope13 in New Orleans but boy did I pack a lot into the 24 hours that I was there.

Stupid unique index tricks...

I have a case where I need to enforce uniqueness on a combination of columns but only when a flag is set (ACTIVE_FLAG=1). The table also holds history and may have multiple inactive records mixed in but I don't want to keep those from being added to the table.

This can be done by exploiting the fact that null index expressions are not indexed. DECODE and function based index to the rescue! Here is a quick proof of concept with the relevant columns:

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