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Modernizing Oracle Tuxedo Applications with Python

Modernizing Oracle Tuxedo Applications with Python

By : Kalvans
4.8 (8)
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Modernizing Oracle Tuxedo Applications with Python

Modernizing Oracle Tuxedo Applications with Python

4.8 (8)
By: 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)
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1
Section 1: The Basics
6
Section 2: The Good Bits
12
Section 3: Integrations

Stopping the application

Now we can shut down the application by using the following command:

tmshutdown -y

This will stop all Tuxedo servers in the reverse order to how they were started, first our Python server and then the BBL admin process. Sometimes, however, a graceful shutdown does not succeed and tmshutdown will ask whether you want to kill the hanging process. It is fine to kill servers on a test application, but this requires more thought on production servers. There is also a final resort to shut down the application by brutally removing all queues and shared memory used by the application. Use it wisely:

tmipcrm -y

At this point, we have completed the full application life cycle. No part of the application is running after this and all memory, semaphores, and queues are released back to the operating system.

Tip

For the duration of this book, get into the habit of loading the configuration (tmloadcf -y ubbconfig), starting the application (tmboot -y),...

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