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

Administering the application

Tuxedo comes with the tmadmin tool for administering the application. But there are a couple of things that can be done without it. First, let's look at the processes started by running tmboot. A common trick for distinguishing Tuxedo processes from non-Tuxedo processes is to look for ULOG in the process options (unless you have specified a different ULOGPFX configuration parameter):

ps aux | grep ULOG

This command will print the two processes started, BBL and python3, which run our processes. Notice how many command-line options the running Tuxedo process is given compared to what was printed to the console. If you are curious, use the following command:

tmboot -n -d1

This will print the real commands that Tuxedo's tmboot uses to start the application. It turns out that tmboot is not special and performs no magic: the entire application can be started by hand using the real commands from the output. tmboot just runs executables with...