Amazon Looks at Your Social Graph

Social media is really just a way to accelerate the social interactions amongst people that have always been occurring. “Accelerate,” in this case, meaning reaching more people in less time. For retail, an important interaction we want to capture is that of product recommendations. We started doing this online by letting customers rate their purchases, [...]

The Semantic Web and Retail

The software industry has been using XML for quite a while since it carries meaning along with the data. But websites are written in HTML, not XML, so all the information is hard for computer programs to understand. Over the past few years the W3C has been pushing something called the Semantic Web, an approach [...]

OBIEE 11g Feature: Chart Zoom

Continuing the series on OBIEE 11g new features, today we have another guest blogger to cover the new Chart Zoom feature. Today’s guest blogger is Arun Somayaji, another top OBIEE consultant and thought leader from our BI practice. OBIEE 11g New Feature Highlight: Chart Zoom By Arun Somayaji, Principal Consultant, Oracle Consulting One of the [...]

CONNECT BY and Recursive CTE

11gR2 introduced a new mechanism to build up hierarchies. I remembered a thread in developpez.net that reveals the dubious implementation of nocycle in 10g. For the CONNECT BY ISLEAF, I have read the technique on amis.nl. Ok, here is my graph The 10g query with o as ( SELECT 'A' obj, 'B' link from dual [...]

Ten Requirements for Achieving Collaboration #7: Tracking the Change and Evolution of Information

We are in the midst of a series investigating collaboration. We previously wrote about the two types of collaboration – intentional and accidental. INTENTIONAL: where we get together to achieve a goal and ACCIDENTAL: where you interact with something of mine and I am never aware of your interaction While intentional collaboration is good it [...]

JDeveloper 11.1.1.2 is out

A new version of JDeveloper is out on OTN – looking at the version number you might think this is just a patch release with some bug fixes, but in reality it is quite a major release for us. The new features document should be here shortly. In the meantime, some of the features you [...]

Berkeley DB Java Edition jconsole Plugin

My colleague Tao Zhang has been working on a jconsole plugin which will let you monitor Berkeley DB Java Edition stats in real time. This will be especially useful for helping our customers debug performance issues. We’re all really excited about this new feature which will be available in JE 4.0 (the corporate lawyers will [...]

One Thing From James Gosling’s Oracle OpenWorld Keynote

He showed a graph of log(CPU clock speed). It was essentially a linear line from 1975 until about 2003. Since then it has been about flat, even down a little bit. Then he overlayed a graph of the # of cores * log(CPU clock speed). After a few years of flat the linear increase resumed [...]

.plz dump file

What are those .plz dump files in my user dump directory ? -rw-r–r–   1 oracle   dba        15168 Oct  6 14:34 _anon__3ca8c5e38__AB.plz -rw-r—–   1 oracle   dba        15883 Oct  6 14:45 db01_ora_10061.trc -rw-r–r–   1 oracle   dba        15168 Oct  6 14:45 _anon__3c929b088__AB.plz -rw-r—–   1 oracle   dba        15895 Oct  6 14:47 db01_ora_10666.trc -rw-r–r–   1 oracle   dba        15168 Oct  6 14:47 _anon__3c8651198__AB.plz let’s check one, briefly : *** ASSERT at [...]

What’s the Best Way to Collect Ratings?

Photo by anne.oeldorfhirsch from Flickr used under Creative Commons YouTube published (h/t TechCrunch) an interesting graph of its video ratings earlier in the week. YouTube uses a five-star scale for rating videos, and according to them, rating a video one star means you “loathe” it, while rating a video five stars means you love it. [...]