Book Image

Getting Started with Oracle Tuxedo

Book Image

Getting Started with Oracle Tuxedo

Overview of this book

The client server or Tuxedo has existed for the past few decades and it is expanding every day! Today, Service Oriented Architecture (SOA) or Service Component Architecture (SCA) are considered to be the new approaches to build client server architecture, Tuxedo adopts this concept and can be extended very easily. "Getting Started with Oracle Tuxedo" shows how to develop distributed systems using Tuxedo and extend that to SOA or even a Cloud environment. The primary objective of this book is to show how to develop distributed systems using Tuxedo and extend that to a SOA environment. It also gives fundamentals of Exalogic machines and how Tuxedo application can leverage these new high end machines for enterprise needs. This book introduces you to the client server technology and how it has evolved in past decades. The book also covers various Tuxedo installation procedures, hardware and software requirements, and then how to configure Tuxedo application, all parameters with their syntax and relevant values. You will be introduced to various Tuxedo administrative tools, which are very important for a Tuxedo Administrator to perform his daily work, and with tuning suggestions and best practices. Next comes, Tuxedo APIs to build your applications, combining client and server modules. The book then covers the SALT component, which allows external web service applications to invoke Tuxedo services, and similarly Tuxedo applications can invoke external web services. At the end we discuss briefly the Exalogic machine and its architecture and how to configure and deploy Tuxedo application in this environment.
Table of Contents (12 chapters)

Administering the Tuxedo queue (/Q)


Tuxedo provides a reliable queue based on the XA-compliant resource manager (TMS – Transaction Manager Server), which provides the framework to store messages in a reliable storage and forward it to different components. These could be services, clients, or components within different Tuxedo processes. The purpose of a queue is to perform time-independent communication. Any client or server can store onto (enqueue) and retrieve (dequeue) a message from the queue. Tuxedo provides the TMQUEUE server, which provides this enqeuing and dequing service.

Tuxedo also provides a server called TMQFORWARD, which dequeues a message and forwards it to other services. Messages can be retrieved in any of several ordering schemes, including Last In, First Out (LIFO), First In, First Out (FIFO), priority order, and time-based order. More than one client or server can access the same queue. In Chapter 3, Development of Tuxedo – Various APIs, I have discussed the Tuxedo queue...