All Blog Posts (284)

Installation:

Disk and memory requirements:

R is a powerful language for data analysis, data visualization, machine learning, statistics. Originally developed for statistical programming, it is now one of the most popular languages in data science.

If you are a database professional (Data Engineer, DBA, Database Developer, etc.) and looking to leverage the power of R to analyze and visualize data in relational databases (RDBMSes), Big Data U (BDU) has a free, self-paced online course to get you going quickly:…

What is a Log:

Log is nothing but a transaction log. A transaction log is a file which stores the history of actions executed by a database management system, which is used to recover at the time of crashes.

All databases maintain log files that keep records of database changes.

Types of logging strategy choices:

1. Circular logging

2. Retain log records …

Just like a high performance sports car, a database requires some checks to keep it running optimally. This article is broken down into tasks or checks that can be run at different intervals on your DB2 LUW database, to do just that. Read more

ReadMore

How many of you know that locks will also use memory? Yes they uses a a certain amount of…

IBM's  conversations with clients have revealed a consistent challenge across several organizations – the need to drive incremental value from existing infrastructure investments.   If you are looking for innovative ways to leverage your investments and the ability to deploy workloads across on premise and in the cloud without loss of performance in a secure manner, IBM is hosting a Webinar on June 14th

I wanted to share with you details of the DB2  Webinar on 14^th June at…

Matt Huras - Chief Architect, DB2 for Linux, Unix and Windows has shared this great article discussing some of the high-value, core advances in security, availability and performance with the recently announced DB2 11.1 for Linux, UNIX and Windows.

This article is Part 1 of a 2-part Blog series.  The article discusses the following

• Core Database Advances with DB2 11.1
• Enhancements to Enterprise Key Management…

Hi everyone,

In order to analize system performance I tried to discover how time is spent within my database system.

According to the documentation, TOTAL_RQST_TIME=TOTAL_WAIT_TIME + TOTAL_*_PROC_TIME.

By querying the service class table function (MON_GET_SERVICE_CLASS) I'm disappointed by the fact that there is a big difference between total_rqst_time and the sum of all other values.

It seems that with "normal" DML statements these two values are quite…

Operational monitoring of system performance

Operational monitoring refers to collecting key system performance metrics at periodic intervals over time. This information gives you critical data to refine that initial configuration to be more tailored to your requirements, and also prepares you to address new problems that might appear on their own or following software upgrades, increases in data or user volumes, or new application deployments.... …

Have you come across a scenario where you need to migrate your databases db2 LUW from AIX P6 Box to P8 box and you couldn't perform a redirected restore as this could be time consuming activity.

Below is link where you can learn quickly how to migrate db2 luw in 7 minutes

DB2 LUW Migration from AIX P6 Box to AIX P8 Box.

DB2 LUW migration from AIX P6…

I have a table A with 30,000 Records.

Module B  selects the data from the table A.

This  module B is  called  via online(CICS) and Batch mode.

This Module  is called 30 million times in day. 20% of traffic is via Online mode and 80% of traffic is via Batch Mode.

In a second this Table is referred 30 times and in a minute 4500 times.

Each time Module B is triggered it selects data from Table A.

Whenever I do a select to table A. IO is caused and by…

Mis Comentarios Técnicos



Empezaremos esta entrega hablando de unos de las implementaciones tal vez menos conocidas, es la referida al particionamiento en un servidor. En especial nuestro interés es más bien estratégico y queremos enseñarles como sabe usted que esta ante una instalación de este tipo. Para ello hemos estructurados dos partes, en la primera aprenderemos a darnos cuenta que estamos antes este tipo de instalación y entender su arquitectura estratégica y la segunda, donde…

Lots of new content is available on www.ibmbluhub.com, a site that is focused on BLU Acceleration in-memory computing for fast reporting and analytics from the transaction environment or a warehouse environment.  Here is a summary of some content you may want to check out:

• What's new for BLU Acceleration in DB2 10.5 "Cancun Release", especially BLU Shadow Tables that let you perform operational reporting in the…

Oracle Toplink:-

Oracle TopLink supports access to any data store accessible through standard JDBC using standard SQL.

Additionally TopLink offers database platforms that allow for specific functionality to be exposed such as

native SQL, sequencing, out-join syntax, custom date/timestamp operators and formats, and schema import

and generation with the mapping editors.



To setup Oracle Toplink please follow the below steps :-



1.We need to identify the…

This post is useful for DB2 developers, administrators, database architects to learn how to access Oracle database

stored procedures from DB2 database sources.

A federated system is a special type of distributed database management system (DBMS).

A federated system consists of a DB2® database system that operates as a federated server, a database that acts

as the federated database, one or more data sources, and clients (users and applications) that access the…

My top five picks of new content on the DB2 with BLU Acceleration microsite at www.ibmbluhub.com:

• Partner solutions pages - find out which ISVs and consultants use BLU Acceleration in-memory computing to speed access to data and insights: goo.gl/jqdeC3
• What is in-memory computing? - Find out how it works, what its benefits…

The heart of today's data warehouse, big data and analytics initiatives is based around databases.  Analysts show that transactional data and  log data are top two types of data used in big data initiatives despite the immediate association of social data and unstructured content.   DB2 for z/OS by example is robust, scalable, secure and provides some of the best transactional integrity.  With all of this Mike Ferguson analyst and consultant concludes in his white paper : "All of this makes…

Hold tight - this will probably freak the accounting world out.  I was listening to an analyst call about big data earlier today.   I asked the question whether data would soon have a value on the asset sheet.   There was a resounding agreement that it would -  if a suitable metric could be devised.



To me it all depends on whether an organization can put controls around the following (non-exhaustive) criteria :

Accurate data  - bad data is like a virus to the business and could…