Book Image

Modernizing Oracle Tuxedo Applications with Python

By : Aivars Kalvans
Book Image

Modernizing Oracle Tuxedo Applications with Python

By: Aivars Kalvans

Overview of this book

Despite being developed in the 1980s, Oracle Tuxedo still runs a significant part of critical infrastructure and is not going away any time soon. Modernizing Oracle Tuxedo Applications with Python will help you get to grips with the most important Tuxedo concepts by writing Python code. The book starts with an introduction to Oracle Tuxedo and guides you in installing its latest version and Python bindings for Tuxedo on Linux. You'll then learn how to build your first server and client, configure Tuxedo, and start running an application. As you advance, you'll understand load balancing and work with the BBL server, which is at the heart of a Tuxedo application. This Tuxedo book will also cover Boolean expressions and different ways to export Tuxedo buffers for storage and transmission, before showing you how to implement servers and clients and use the management information base to change the configuration dynamically. Once you've learned how to configure Tuxedo for transactions and control them in application code, you'll discover how to use the store-and-forward functionality to reach destinations and use an Oracle database from a Tuxedo application. By the end of this Oracle Tuxedo book, you'll be able to perform common Tuxedo programming tasks with Python and integrate Tuxedo applications with other parts of modern infrastructure.
Table of Contents (18 chapters)
1
Section 1: The Basics
6
Section 2: The Good Bits
12
Section 3: Integrations

Monitoring the application

In addition to the configuration, MIB also contains runtime information and statistics about the application. We already viewed some of this when we used the tmadmin command in previous chapters.

To get an overview of the system statistics, we will use the tpadmcall function. Since tpadmcall can work both with a running and stopped application, it assumes a stopped application by default and does not attempt to connect it. However, we now have a running application and we must connect it explicitly. We will use the tpsysop client name to obtain read-only access to the system. We will also set a special flags value, called MIB_LOCAL, which instructs the application to return local information containing statistics:

import tuxedo as t
t.tpinit(cltname="tpsysop")
machine = t.tpadmcall({
        "TA_CLASS": "T_MACHINE",
        "TA_OPERATION...