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<img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/cosTransactions-1.2.12.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>cosTransactions</strong><br><strong>User's Guide</strong><br><small>Version 1.2.12</small></p>
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<li id="no" title="The cosTransactions Application" expanded="false">The cosTransactions Application<ul>
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<h1>2 Introduction to cosTransactions</h1>
<h3><a name="id60972">2.1
Overview</a></h3>
<p>The cosTransactions application is a Transaction Service compliant with the <span class="bold_code"><a href="http://www.omg.org">OMG</a></span>
Transaction Service CosTransactions 1.1.
</p>
<h4>Purpose and Dependencies</h4>
<p><strong>cosTransactions</strong> is dependent on <strong>Orber version 3.0.1</strong> or later(see the Orber
documentation), which provides CORBA functionality in an Erlang environment.</p>
<p><strong>cosTransactions</strong> is dependent on <strong>supervisor/stdlib-1.7</strong> or later.</p>
<p>Basically, cosTransaction implements a <strong>two-phase commit protocol</strong> and allows objects running
on different platforms to participate in a transaction.</p>
<h4>Prerequisites</h4>
<p>To fully understand the concepts presented in the
documentation, it is recommended that the user is familiar
with distributed programming, CORBA and the Orber application.
</p>
<p>Recommended reading includes <strong>CORBA, Fundamentals and Programming - Jon Siegel</strong> and <strong>Open Telecom Platform Documentation Set</strong>. It is also helpful to have read
<strong>Concurrent Programming in Erlang</strong> and, for example, <strong>Transaction Processing: concepts and techniques - Jim Gray, Andreas Reuter</strong>.</p>
<div class="note">
<div class="label">Note</div>
<div class="content"><p>
<p>The cosTransaction application is compliant with the OMG CosTransactions specification 1.1. Using
other vendors transaction service, compliant with the OMG CosTransactions specification 1.0, may
not work since the <span class="code">'TRANSACTION_REQUIRED', 'TRANSACTION_ROLLEDBACK'</span> and <span class="code">'INVALID_TRANSACTION'</span>
exceptions have been redefined to be system exceptions, i.e., used to be transaction-specific ('CosTransactions_Exc').</p>
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