Computer

Big Data

Big Data

Big data can be explained by understanding the following key aspects: Volume. There is no specific quantification that says volume above these many terabytes will be called Big data. What volume one considers as threshold depends on the perspective and the year we are in (big data is a moving target). However, this large volume [...]

Artificial Intelligence

Artificial Intelligence

Artificial intelligence deals with mimicking the way the human brain works or evolution of life and other such natural phenomena. Here are some of the artificial intelligence techniques: Artificial Neural Networks Fuzzy logic Genetic algorithms Cellular automata Artificial Neural Networks are inspired by the way the brain works. A neural network consists of a network [...]

United States: Protest against changes to Rule 41

United States: Protest against changes to Rule 41

We stand in protest on June 21st 2016, against proposed changes to Rule 41. We are with EFF on this.

Updating Sony Xperia Z2 to Android Marshmallow

Updating Sony Xperia Z2 to Android Marshmallow

Having waited for several days for the update to be pushed to my phone, I temporarily moved over from Airtel to Vodafone. Wow! the update was pushed within seconds – after I connected to the PC using the Xperia Companion software. Airtel seems to be helplessly slow in pushing this update (or perhaps it decided [...]

Oracle performance tuning - an update

Oracle performance tuning – an update

A tutorial is now available to perform Oracle performance tuning of applications and SQL statements. This tutorial has been expanded to include case studies, which will go a long way in better understanding of concepts explained. Link to the PDF tutorial here: Tuning.pdf This current posting is an extension to the existing post on performance [...]

Oracle: Snapshot too old?

Oracle: Snapshot too old?

Okay, so you have received the Oracle error ORA-01555 Snapshot Too Old and have no clue how to go about resolving it? This post is made for you then. (The first time an application developer has written about this rather than a DBA.) First, why does this occur? When you run a query, Oracle retains [...]