Why Oracle Big Data SQL Potentially Solves a Big Issue with Hadoop Security

Oracle announced their Big Data SQL product a couple of weeks ago, which effectively extends Exadata’s query-offloading to Hadoop data sources. I covered the launch a few days afterwards, focusing on how it implements Exadata’s SmartScan on Hive and NoSQL data sources and provides a single metadata catalog over both relational, and Hadoop, data sources. In a Twitter conversation later in the day though, I made the comment that in my opinion, the biggest (more...)

Capturing Environment Variables in Oracle APEX


 This post focuses on the Environment variables as they are vital in coding conditional statements.

Check https://apex.oracle.com/pls/apex/f?p=81782:2:0::::: to have a look at the possible variables in a typical APEX environment.

Let me share a screenshot of the page

The page shown above has the following 2 regions.

1. Using USERENV
2. CGI Variables

Let us talk about these one by one.

Using USERENV region: This region displays information captured using the (more...)

Tokenizing a String

Over the past while I've been working a lot with text strings. Some of these have been short in length like tweets from Twitter, or longer pieces of text like product reviews. Plus others of various lengths.

In all these scenarios I have to break up the data into individual works or Tokens.

The examples given below illustrate how you can take a string and break it into its individual tokens. In addition to tokenising (more...)

String aggregation in OBIEE


In the BI world, we talk about measures and aggregation but we don't talk a lot about string aggregation. String aggregation is about concatenating strings for a certain dimensional value. Let me give an example. Let us say that we have a purchase order (Lets call it PO1) raised for a set of items (Lets say I1,I2 and I3). Lets say that the supplier does not have I1 in stock and wants a larger order (more...)

Still here

Hi everyone
I am still here. Just wanted to let you know that I am still in the business of working with Discoverer even though Oracle recently announced that it would be de-supported. If you need help just get in touch.

Also, you may not be aware but we have updated our Discoverer Handbook with the latest 11g version. You can find it on Amazon

Using DB Link in OBIEE


This blog talks about the process to use DB Links on OBIEE.

Since we are talking about linking data from 2 different databases, I will like to mention that OBIEE gives the freedom to join tables across databases in the physical layer.
BI Publisher in 11g also lets us join data sets but the join is currently an equi join. This join is called a "Link" in BI Publisher world and you can find more (more...)

Using BIP parameters in OBIEE dashboards without creating prompts


This is a simple trick that presents the process to have a parametrized BIP report in OBIEE without the need to create new prompts in OBIEE.


Steps:

1. Edit the dashboard and drag Embedded Content in an OBIEE dashboard section.

2. Put the following URL in the Embedded Content Properties
http://<OBIEE presentration server>:<OBIEE presentation server port>/xmlpserver/<BIP report xdo file path starting from shared folders>?&_xmode=2

For example,

http://<OBIEE presentration server>:<OBIEE presentation server port>/xmlpserver/Supply+Chain/Item (more...)

Permissions for both HDFS and local fileSystem paths

| Jul 18, 2014

Hi All,

Permission issues is one of the key error , while setting up Hadoop Cluster, while debugging some error found below table on http://hadoop.apache.org/ . It’s a good scorecard to keep handy.

 

Permissions for both HDFS and local fileSystem paths

The following table lists various paths on HDFS and local filesystems (on all nodes) and recommended permissions:

Filesystem Path User:Group Permissions
local dfs.namenode.name.dir hdfs:hadoop drwx——
local dfs.datanode.data.dir (more...)

Taking a Look at the New Oracle Big Data SQL

Oracle launched their Oracle Big Data SQL product earlier this week, and it’ll be of interest to anyone who saw our series of posts a few weeks ago about the updated Oracle Information Management Reference Architecture, where Hadoop now sits alongside traditional Oracle data warehouses to provide what’s termed a “data reservoir”. In this type of architecture, Hadoop and its underlying technologies HDFS, Hive and schema-on-read databases provide an extension to the more structured (more...)

OTN Latin America (North) Tour 2014

For a few years now I (and I'm sure you have too) have heard about and followed the various Oracle User Group tours that OTN arranges/facilitates. A tour consists of a number of Oracle User Groups in a region coordinating together to have their conferences organised so that they can get speakers from across the world to come and present.

For most presenters it involves lots of travel. So instead of them doing all that (more...)

War of the Hadoop SQL engines. And the winner is …?

You may have wondered why we were quiet over the last couple of weeks? Well, we locked ourselves into the basement and did some research and a couple of projects and PoCs on Hadoop, Big Data, and distributed processing frameworks in general. We were also looking at Clickstream data and Web Analytics solutions. Over the next couple of weeks we will update our website with our new offerings, products, and services. The article below summarises (more...)

GoldenGate and Oracle Data Integrator – A Perfect Match in 12c… Part 4: Start Journalizing!

In this post, the finale of the four-part series “GoldenGate and Oracle Data Integrator – A Perfect Match in 12c”, I’ll walk through the setup of the ODI Models and start journalizing in “online” mode. This will utilize our customized JKM to build the GoldenGate parameter files based on the ODI Metadata and deploy them to both the source and target GoldenGate installation locations. Before I get into all of the details, let’s recap the first 3 posts and (more...)

Simple Ways to Simplify: Quick Fixes to Enhance OBIEE Visuals

Over the past couple of months I worked with a few clients in order to conduct an assessment on dashboard and analysis design. In most cases I was noticing that the dashboards were overflowing with content to the point that there was really no discernible “story” or “flow” to the information. Most of the dashboards were an overwhelming hub of large tables, excess dashboard prompts, and complicated charts and graphs. Many times the client complaints (more...)

Vishal Sikka’s Appointment as Infosys CEO



My article in the DNA on Vishal Sikka's appointment as CEO of Infosys was published on June 25, 2014.

This is the full text of the article:


Vishal Sikka's appointment as CEO of Infosys was by far the biggest news event for the Indian technology sector in some time. Sikka was most recently the Chief Technology Officer at the German software giant SAP, where he led the development of HANA - an in-memory analytics appliance (more...)

GoldenGate and Oracle Data Integrator – A Perfect Match in 12c… Part 3: Setup Journalizing

After a short vacation, some exciting news, and a busy few weeks (including KScope14 in Seattle, WA), it’s time to get the “GoldenGate and Oracle Data Integrator – A Perfect Match in 12c” blog series rolling again. Hopefully readers can find some time between World Cup matches to try integrating ODI and GoldenGate on their own!

To recap my previous two posts on this subject, I first started by showing the latest Information Management (more...)

OBIEE Training Site

I was contacted by Seth Williams, who pointed me to this OBIEE training site - http://www.fireboxtraining.com/obiee-training, and asked if I would link to it. There is a an online tutorial, as well as a video, on how to create KPIs using OBIEE - How To Use KPIs | OBIEE Online Training Tutorial

I think this is useful, so am posting it to my blog - which, by the way, you would have (more...)

Oracle Magazine September/October 2000

The headline articles of Oracle Magazine for September/October 2000 were on e-Business Integration, including online healthy prescription for online retailing, streamlineing the pulp and fiber industries, and the health care industry. Plus there was lots and lots of articles and news items all on businesses delivering solutions via the internet.


Ora Mag 2000 Sept Oct

As this was the Oracle Open World edition (and you see the label on the cover saying Biggest Ever) you can imagine there was a (more...)

Going Beyond the Summary Advisor with TimesTen for Exalytics

I’m over in Seattle at the moment for ODTUG KScope’14, and one of the topics I’m presenting on this week is the use of TimesTen with OBIEE; what I’m going to talk about is taking TimesTen beyond its current use as an in-memory cache for aggregates created by the Summary Advisor, and instead using it to store additional custom aggregates, “hot” data from the source data warehouse, and other custom structures created using SQL*Developer (more...)

Trying to understand the Oracle Reference Architecture for Information Management

Last month I have been attending the RittmanMead BI Forum 2014. In the wrap-up I mentioned a presentation by Andrew Bond & Stewart Bryson. They had a very nice presentation about the Oracle Information Management Reference Architecture. This needed some further investigation from my part. This blogpost is a first summary of the information I found online so far. There is […]

ORE Getting Connected: ore.connect and other commands

After you have installed I ORE on your client and server (see my previous blog posts on these), you are not ready to start getting your hand dirty with ORE. During the installation of ORE you setup a test schema in your database to test that you can make a connection. But you will not be using this schema for you ORE work. Typically you will want to use one of your existing schemas that (more...)