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<!DOCTYPE html>
<html itemscope="itemscope" itemtype="http://schema.org/WebPage" lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<title>cx_Oracle - Python Interface for Oracle Database</title>
<link rel="stylesheet" href="base.css" type="text/css" />
<link rel="shortcut icon" type="image/ico" href="favicon.ico" />
</head>
<body>
<div class="oracleHeader">
<div class="container">
<a class="oracleLogo" href="https://www.oracle.com/">Oracle</a>
</div>
</div>
<header class="header" role="banner">
<div class="container">
<div class="headerLogoContainer">
<img class="headerLogo" alt="cx_Oracle logo" src="logo.png" />
</div>
<div class="headerContent">
<h1 class="headerTitle">cx_Oracle version 8.2</h1>
<nav class="headerNav" role="navigation">
<ul>
<li><a href="http://cx-oracle.readthedocs.io/en/latest/index.html">Documentation</a></li>
<li><a href="https://cx-oracle.readthedocs.io/en/latest/user_guide/installation.html" >Installation</a></li>
<li><a href="https://cx-oracle.readthedocs.io/en/latest/release_notes.html#releasenotes">Release Notes</a></li>
<li><a href="https://github.com/oracle/python-cx_Oracle">Source code</a></li>
<li><a href="https://github.com/oracle/python-cx_Oracle/issues">Help</a></li>
</ul>
</nav>
</div>
</div>
</header>
<main class="mainContent" role="main">
<div class="container">
<div id="about">
<h2>About cx_Oracle</h2>
<p><strong>cx_Oracle</strong> is a Python extension module that
enables access to Oracle Database. It conforms to the Python
database API 2.0 <a
href="http://www.python.org/topics/database/DatabaseAPI-2.0.html">
specification</a> with a considerable number of additions and a
couple of exclusions.</p>
<p>cx_Oracle 8.2 has been tested with Python versions 3.6 through 3.9.
Older versions of cx_Oracle may be used with previous Python releases.
You can use cx_Oracle with Oracle 11.2, 12, 18, 19 and 21 client
libraries. Oracle's standard client-server version interoperability
allows connection to both older and newer databases. For example Oracle
19c client libraries can connect to Oracle Database 11.2.</p>
</div> <!-- /about -->
<div id="quickstart">
<h2>Getting Started</h2>
See <a
href="https://www.oracle.com/database/technologies/appdev/python/quickstartpythononprem.html"
>Quick Start: Developing Python Applications for Oracle Database</a>.
</div> <!-- /quickstart -->
<div id="installation">
<h2>Installation</h2>
See <a
href="https://cx-oracle.readthedocs.io/en/latest/user_guide/installation.html"
>cx_Oracle Installation</a> for detailed instructions.
</div> <!-- /installation -->
<div id="documentation">
<h2>Documentation</h2>
See the <a href="http://cx-oracle.readthedocs.io" >cx_Oracle
Documentation</a> and <a
href="https://cx-oracle.readthedocs.io/en/latest/release_notes.html#releasenotes"
>Release Notes</a>.
</div> <!-- /documentation -->
<div id="tutorial">
<h2>Tutorial</h2>
The <a
href="samples/tutorial/Python-and-Oracle-Database-Scripting-for-the-Future.html">Python and Oracle Database Tutorial: Scripting for the Future</a>
is also runnable in <a
href="https://oracle.github.io/learning-library/developer-library/python-and-database-scripting/workshops/freetier/" "
>Oracle Cloud</a>.
</div> <!-- /tutorial -->
<div id="example">
<h2>Samples</h2>
See the <a
href="https://github.com/oracle/python-cx_Oracle/tree/master/samples"
>/samples</a> directory. You can also look at the scripts in <a
href="https://github.com/anthony-tuininga/cx_OracleTools">cx_OracleTools</a>
and the modules in <a
href="https://github.com/anthony-tuininga/cx_PyOracleLib">cx_PyOracleLib</a>.
</div> <!-- /example -->
<div id="help">
<h2>Help</h2>
<p>Issues and questions can be raised with the cx_Oracle community on
<a href="https://github.com/oracle/python-cx_Oracle/issues"
>GitHub</a> or on the <a
href="http://lists.sourceforge.net/lists/listinfo/cx-oracle-users"
>mailing list</a>.</p>
</div> <!-- /help -->
<div id="tests">
<h2>Tests</h2>
See the <a href="https://github.com/oracle/python-cx_Oracle/tree/master/test" >test suite</a>.
</div> <!-- /tests -->
<div id="contribuing">
<h2>Contributing</h2>
See <a href="https://github.com/oracle/python-cx_Oracle/blob/master/CONTRIBUTING.md" >CONTRIBUTING</a>.
</div> <!-- /contributing -->
<div id="features">
<h2>Features</h2>
<ul>
<li><p>Easily installed from PyPI.</p></li>
<li><p>Support for Python 3.6 and higher. Older versions of cx_Oracle may
be used with previous Python releases.</p></li>
<li><p>Support for Oracle Client 11.2, 12, 18, 19 and 21.
Oracle's standard cross-version interoperability, allows easy upgrades
and connectivity to different Oracle Database versions.</p></li>
<li><p>Connect to Oracle Database 9.2, 10, 11, 12, 18, 19 or 21
(depending on the Oracle Client version used).</p></li>
<li><p>SQL and PL/SQL Execution. The underlying Oracle Client
libraries have significant optimizations including compressed fetch,
pre-fetching, client and server result set caching, and statement
caching with auto-tuning.</p></li>
<li><p>Full use of Oracle Network Service infrastructure, including
encrypted network traffic and security features.</p></li>
<li><p>Extensive Oracle data type support, including large object
support (CLOB and BLOB).</p></li>
<li><p>Direct binding to SQL objects. One great use case is binding
Python objects to Oracle Spatial SDO objects.</p></li>
<li><p>JSON datatype support.</p></li>
<li><p>SODA (Simple Oracle Document Access).</p></li>
<li><p>Array operations for efficient INSERT and UPDATEs.</p></li>
<li><p>Array row counts and batch error handling for array operations.</p></li>
<li><p>Fetching of large result sets.</p></li>
<li><p>REF CURSOR support.</p></li>
<li><p>Support for scrollable cursors. Go back and forth through your
query results.</p></li>
<li><p>Fetch PL/SQL Implicit Results. Easily return query results from
PL/SQL.</p></li>
<li><p>Row Prefetching. Efficient use of the network.</p></li>
<li><p>Client Result Caching. Improve performance of frequently
executed look-up statements.</p></li>
<li><p>Support for Advanced Queuing. Use database notifications to
build micro-service applications.</p></li>
<li><p>Continuous Query Notification (CQN). Get notified when data
changes.</p></li>
<li><p>Support for Edition Based Redefinition. Easily switch
applications to use updated PL/SQL logic.</p></li>
<li><p>Support for setting application context during the creation of
a connection, making application metadata more accessible to the
database, including in LOGON triggers.</p></li>
<li><p>End-to-end monitoring and tracing.</p></li>
<li><p>Transaction Management.</p></li>
<li><p>Session Pooling, with tagging and session state fix-up callback.</p></li>
<li><p>Database Resident Connection Pooling (DRCP).</p></li>
<li><p>Privileged Connections.</p></li>
<li><p>External Authentication.</p></li>
<li><p>Database startup and shutdown.</p></li>
<li><p>Sharded Databases.</p></li>
<li><p>Oracle Database High Availability Features, such as FAN
notifications, Application Continuity, and Transaction Guard support.</p></li>
</ul>
<p>DB API specification exclusions: The time data type is not
supported by Oracle and is therefore not implemented. The method
<code>cursor.nextset()</code> is not implemented either as the DB API
specification assumes an implementation of cursors that does not fit
well with Oracle's implementation of cursors and implicit results. See
the method
<a href="https://cx-oracle.readthedocs.io/en/latest/api_manual/cursor.html#Cursor.getimplicitresults">cursor.getimplicitresults()</a>
for more information.
</p>
</div> <!-- /features -->
<div id="license">
<h2>License</h2>
<p>cx_Oracle is licensed under a BSD license which you can find <a
href="https://github.com/oracle/python-cx_Oracle/blob/master/LICENSE.txt"
>here</a>. The cx_Oracle project is open source and maintained by Oracle Corp.</p>
</div> <!-- /license -->
</div>
</main>
</body>
</html>
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