Blog

Quick Thoughts on DB2 Performance

Database performance issues are all about change. Craig Mullins explains in latest blog post.

Reading Things That Aren’t There… and Missing Things That Are!

New blog post takes you through a couple DB2 features in order to help you read your data in the database correctly.

Data Types: The Importance of Choosing the Correct Data Type

Most DBAs have struggled with the pros and cons of choosing one data type over another. This blog post discusses different situations.

Limiting the Number of Rows Fetched

Craig Mullins’ blog post maps out the process for developers who need to retrieve a limited number of qualifying rows from a table.

Db2 Isolation Levels: Know Your ISOLATION Levels

It is important for DB2 DBAs and application programmers to know the four isolation levels and their impact on SQL in order to control concurrency and locking.

Approaches to Access Path Management… or The Five R’s

Craig Mullins’ blog post takes users through the different approaches to access path management in order to develop strategies on how to REBIND your programs.

Basic DB2 Buffering and Memory Guidelines

One of the most important areas for tuning DB2 subsystem performance is memory usage. This post shares buffering and memory guidelines for better DB2 performance.

Cost vs. Advantage of Moving From IMS DB to DB2

This blog post discusses costs vs. advantages of converting an existing application from IMS DB to DB2.

A Short Introduction to Lock Avoidance

Lock avoidance is a mechanism employed by DB2 for z/OS to access data without locking while maintaining data integrity. Avoiding locks can improve performance.