All Blog Posts (281)

What are the DB2 LUW DBA daily activities?

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

Added by Vinay Kumar Bommana on September 8, 2016 at 5:04am — No Comments

DB2 Important Commands


Added by Vinay Kumar Bommana on September 1, 2016 at 10:44am — No Comments

Overview of LOCK ISSUES in DB2

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


Added by Vinay Kumar Bommana on July 4, 2016 at 1:33pm — No Comments

Maximize Your Data Infrastructure Investments with DB2

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 14th June at…


Added by Sajan K on June 7, 2016 at 10:13am — No Comments

DB2 11.1 release simplifies deployment and key management

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…

Added by Sajan K on April 28, 2016 at 4:00am — No Comments

Service class time component

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…


Added by Alessandro Oppici on April 24, 2016 at 2:58am — No Comments

Performance monitoring tools and methodology

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.... …


Added by Vinay Kumar Bommana on March 9, 2016 at 11:30pm — No Comments

DB2 LUW Migration from AIX P6 Box to P8 Box (In 7 Minutes..)

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…


Added by Rohit Kumawat on March 9, 2016 at 5:49am — No Comments

DB2 + transactional + Data + Performance Techniques

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…


Added by Satya on January 18, 2016 at 11:16am — No Comments

Existe Particionamiento de la base de datos en mi servidor ¿cómo me doy cuenta?

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…


Added by SENDEROPRESS on December 13, 2015 at 5:37pm — No Comments

What's new on the BLU Acceleration hub?

Lots of new content is available on, 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…

Added by Cindy Russell on September 26, 2014 at 9:41am — No Comments

Oracle Toplink Setup in DB2

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…


Added by Ramya on September 18, 2014 at 5:41am — No Comments

How to overcome DB2 database corruption issues

IBM is one of the many companies who manufacture server line of products. IBM DB2 is one of the most commonly used server type. For each of the major operating systems, IBM has a specific DB2 product. However, in the recent past it has been seen that IBM has developed a platform-independent server product. In addition to the relational model, it supports object-based features and non-relational structures like XML.

The DB2 performs various management related operations like create,… Continue

Added by Mark Willium on July 8, 2014 at 11:00pm — No Comments

How to create Federated Procedures in DB2 10.5

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…


Added by Ramya on June 24, 2014 at 4:01am — No Comments

New on the BLU Acceleration Hub

My top five picks of new content on the DB2 with BLU Acceleration microsite at

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

Added by Cindy Russell on June 18, 2014 at 11:41am — No Comments

"IBM DB2 for z/OS - at the hear of you business analytics and big data initiatives"

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…


Added by Mark Simmonds on May 20, 2014 at 11:58am — No Comments

The value of data on the balance sheet.

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…


Added by Mark Simmonds on May 20, 2014 at 11:56am — No Comments

User Defined Functions and Stored Procedures to generate and validate hashes

I have updated my db2-hash-routines package to include bcrypt and sha-256 hashes.

The following hashes are supported:

  • bcrypt
  • sha-256
  • sha-1
  • crypt
  • md5

Documentation is available as…


Added by Helmut K. C. Tessarek on May 11, 2014 at 6:38pm — No Comments

Improving DB2 Database Performance - Part I 7 Things to remember while range partitioning

One of the techniques to improve database performance and achieve greater scalability is using table partitioning. According to live industry observations  when you see the following symptoms you should consider table partitioning

Slow queries that return small amounts or no data

Slow queries that return large amounts of data

Blocking between readers and writers (inserts or updates)

As tables grow in size, it may be easier to manage your…


Added by Ramya on May 1, 2014 at 6:00am — No Comments

Transforming Big Data Into Insights - IBM System z

It's a complimentary webcast led by guest speaker Mike Ferguson, an independent consultant and analyst. He will review the business and technical requirements for clients embarking on big data and business analytics solutions. Mike will also discuss some of the key IBM solutions for System z and their potential to help clients meet those requirements.

Register and receive Mike's new white paper on this topic

Added by Mark Simmonds on April 22, 2014 at 10:35am — No Comments

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