Book Image

Teradata Cookbook

By : Abhinav Khandelwal, Viswanath Kasi, Rajsekhar Bhamidipati
Book Image

Teradata Cookbook

By: Abhinav Khandelwal, Viswanath Kasi, Rajsekhar Bhamidipati

Overview of this book

Teradata is an enterprise software company that develops and sells its eponymous relational database management system (RDBMS), which is considered to be a leading data warehousing solutions and provides data management solutions for analytics. This book will help you get all the practical information you need for the creation and implementation of your data warehousing solution using Teradata. The book begins with recipes on quickly setting up a development environment so you can work with different types of data structuring and manipulation function. You will tackle all problems related to efficient querying, stored procedure searching, and navigation techniques. Additionally, you’ll master various administrative tasks such as user and security management, workload management, high availability, performance tuning, and monitoring. This book is designed to take you through the best practices of performing the real daily tasks of a Teradata DBA, and will help you tackle any problem you might encounter in the process.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Changing and managing throttle


Teradata workload management provides another great way to optimize and monitor your system.

Throttles help in limiting the work coming into the system. They are a way to reduce and maintain concurrent queries or requests on the system. Imagine a highway without a red light in place. There would be no traffic management, and all the roads would become jammed. Even if your roads are capable of handling high amounts of traffic, unmanaged traffic will create chaos.

Similar is true for the Teradata database; to keep the system throughput effective all the time, it is important to limit the number of work requests coming into the system.

The following flowchart shows the lifetime of a query on a system:

Query Request Workflow

Note

Teradata 16 has a feature known as flex throttle, which is self intelligent throttle that auto-adjusts itself based on the system workload.

The following are some different kinds of throttles available:

  • Session throttles limit active sessions...