OraNA :: Oracle News Aggregator

This blog post is a follow up to comment on a previous blog post and to some emails.

Basically the people are asking about some messages they get when they open the Oracle Data Miner tool, that is part of SQL Developer.

If you are just using the SQL and PL/SQL functions in the database then you do not have to worried about Oracle Text. You will receive no warning message.

But if you use (more...)

If you are interested in using ORE or just to get an idea of what does ORE give you that does not already exist in one of the other R packages then the table below lists the packages that come as part of ORE.

Before you can use then you will need to load these into your workspace. To do this you can issue the following command from the R prompt or from the prompt (more...)

The Gartner 2014 Advanced Analytics Quadrant is out now. Well it is if you can find it.

Some of the companies have put it up on their websites to promote their position.

For some reason Oracle hasn't and I wonder why?

You can see that some typical technologies are missing from this, but this is to be expected. How much are companies really deploying these alternatives on real problems and in production. Perhaps the positioning (more...)

An important announcement was made on the Oracle Data Mining discussion forum last night and I haven't seen anything on twitter about it yet (but maybe I missed it). It was about some ODM Repository migration issues that you might encounter with using ODM in SQL Developer 4.0.1 and using the Oracle Database 11.2.0.3.

Check out the full announcement here.

Make sure you have a full backup of your ODM (more...)

Hi All,

While building a data flow for replacing one of the EDW’ workflow using Big Data technology stack , came across some interesting findings and issues.  Due to  UPSERT ( INSERT new records or UPDATE existing records depending) nature of data we had to use Hbase, but to expose the outbound feed we need to do some calculation on HBase and publish that to Hive as external. Even though conceptually , its easy to create an (more...)

Back at the end of January Oracle finally go round to releasing the updated version of the Oracle BigDataLite virtual machine. Check out my previous blog post of this.

Yesterday (27th March) I say on Facebook that a new updated versions of the BigDataLite VM was released. I must have missed the tweet and other publicity on this somewhere :-(

This is a great VM that allows you to play with the various Big Data (more...)

In a previous post I gave a an overview of the various in-database data mining algorithms that you can use in your Oracle R Enterprise scripts.

To create data mining models based on those algorithms you need to use the ore.odm functions.

After you have developed and tested your models you will select one of these to score your new data.

How can you do this using ORE? There is a suite of ORE (more...)

Last week, we released Dodeca version 6.7.1.4340 which focuses on some new relational functionality. The major new features in 6.7.1 are:

• Concurrent SQL Query Execution
• Detailed SQL Timed Logging
• Query and Display PDF format
• Ability to Launch Local External Processes from Within Dodeca

Concurrent SQL Query Execution

Dodeca has a built-in SQLPassthroughDataSet object that supports queries to a relational database.  The SQLPassthroughDataSet functionality was engineered such that a SQLPassthroughDataSet object (more...)

Oracle R Enterprise is the version of R that Oracle has that runs in the database instead of on your laptop or desktop.

Oracle already has a significant number of data mining algorithms in the database. With ORE they have exposed these so that they can be easily called from your R (ORE) scripts.

To access these in-database data mining algorithms you will need to use the ore.odm package.

ORE is continually being developed (more...)

Hi All

While looking into HBase performance issue, one of the suggestion was to have more region for a larger table. There was some confusion around, “Region” vs “RegionServer” . While doing some digging, found a simple text written below.

The basic unit of scalability and load balancing in HBase is called a region. Regions are essentially contiguous ranges of rows stored together. They are dynamically split by the system when they become too large. Alternatively, they may (more...)

The title of this blog post makes it sound more dramatic than it actually is.

The reason for this blog post is down to me receiving a recent comment on the blog, plus having received numerous emails and a recent OTN Discussion Forum topic for Oracle Data Mining.

The main thing that they have in common is that if I use the latest version of Oracle Data Mining (ODM) it tells me that I need (more...)

Sometimes it can happen that user profiles within a web catalog become corrupted for any number of reasons. In order for these user profiles to be correctly re-initialized, there's more to be done than just drop /users/JohnDoe from the web catalog.

All in all there are three distinct places which need to be cleaned:

• /users/JohnDoe
• /system/users/123456
• /system/acocuntids/987654

This is really important since especially the third place contains the translation between the userid and the effective (more...)

Hi All

With increasing data  volume , in HDFS space could be continued challenge. While running into some space related issue, following command came very handy, hence thought of sharing with extended virtual community.

hadoop dfsadmin -report

Post running the command, below is the result, it takes all the nodes in the cluster and gives the detail break-up based on the space availability and spaces used.

Configured Capacity: 13965170479105 (12.70 TB)
Present Capacity: 4208469598208  (more...)

Oracle R Enterprise (ORE) 1.4 has just been released and can downloaded from here. Remember there is a client and server side install required and ORE 1.4 is certified against R 3.0.1 and the Oracle R Distribution

One of the interesting new features is the PARALLEL option. You can set this to significantly improve the performance of your R server side code by using the PARALLEL database option. You can set (more...)

In the second part of the series we cover:

More discussion on ODI vs Informatica
More on migrating from OWB to ODI
Using ODI outside the data warehouse (BI Apps)
ODI in the cloud
ODI and Big Data

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In Oracle Data Miner you can use the Explore Node to gather an initial set of statistics for your dataset. As part of this you will also get a bar chart that shows the distributions of the values contained within each attribute. The following example shows the default layout of the bar charts. These graphs a very useful for presenting the initial data exploration results from to your business users. In addition to these graphs (more...)

The Big Data presentation I gave yesterday is now available for download. In this presentation I define some common features of Big Data use cases, explain what the big deal about Big Data is all about and explore the impact of Big Data on the traditional data warehouse framework.

With the recent release of SQL Developer 4.0.1 there has been some very minor bug fixes for Oracle Data Miner. But there has been one particular enhancement that I wanted to have a look at. This blog post will look at this new feature and how you can use it too. In the previously released version of the Oracle Data Miner tool we had a Graph Node. This is really a new feature (more...)

The annual OUG Ireland Conference (or special event) will be on Tuesday 11th March.  Actually this year there are sessions spread over 2 days, for the first time ever in the 10+ year history of OUG Ireland. In addition to 2 days of sessions there are 7 streams of presentations on the Tuesday and then there is the RAC AttacK for the first time in Ireland.

The main conference event is on Tuesday 11th March (more...)