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README
Apache-2.0

python-oracledb

python-oracledb is a Python programming language extension module allowing Python programs to connect to Oracle Database. Python-oracledb is the new name for Oracle's popular cx_Oracle driver.

The module conforms to the Python Database API 2.0 specification with a considerable number of additions and a couple of minor exclusions, see the feature list.

Synchronous and concurrent coding styles are supported.

Installation

Run python -m pip install oracledb

See python-oracledb Installation.

Dependencies and Interoperability

  • Python versions 3.8 through 3.13.

    Prebuilt packages are available for these Python versions on Windows, on macOS and on Linux.

    Source code is also available.

  • Oracle Client libraries are optional.

    Thin mode: By default python-oracledb runs in a 'Thin' mode which connects directly to Oracle Database.

    Thick mode: Some advanced Oracle Database functionality is currently only available when optional Oracle Client libraries are loaded by python-oracledb. Libraries are available in the free Oracle Instant Client packages. Python-oracledb can use Oracle Client libraries 11.2 through 21c.

  • Oracle Database

    Thin mode: Oracle Database 12.1 (or later) is required.

    Thick mode: Oracle Database 9.2 (or later) is required, depending on the Oracle Client library version. Oracle Database's standard client-server version interoperability allows connection to both older and newer databases. For example when python-oracledb uses Oracle Client 19c libraries, then it can connect to Oracle Database 11.2 or later.

Documentation

See the python-oracledb Documentation and Release Notes.

Samples

Examples can be found in the /samples directory and the Python and Oracle Database Tutorial.

Help

Questions can be asked in Github Discussions.

Problem reports can be raised in GitHub Issues.

Tests

See /tests

Contributing

This project welcomes contributions from the community. Before submitting a pull request, please review our contribution guide.

Security

Please consult the security guide for our responsible security vulnerability disclosure process.

License

See LICENSE, THIRD_PARTY_LICENSES, and NOTICE.

Copyright (c) 2016, 2025 Oracle and/or its affiliates. This software is dual-licensed to you under the Universal Permissive License (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose either license. If you elect to accept the software under the Apache License, Version 2.0, the following applies: Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. The Universal Permissive License (UPL), Version 1.0 =================================================== Subject to the condition set forth below, permission is hereby granted to any person obtaining a copy of this software, associated documentation and/or data (collectively the "Software"), free of charge and under any and all copyright rights in the Software, and any and all patent rights owned or freely licensable by each licensor hereunder covering either (i) the unmodified Software as contributed to or provided by such licensor, or (ii) the Larger Works (as defined below), to deal in both (a) the Software, and (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if one is included with the Software (each a "Larger Work" to which the Software is contributed by such licensors), without restriction, including without limitation the rights to copy, create derivative works of, display, perform, and distribute the Software and make, use, sell, offer for sale, import, export, have made, and have sold the Software and the Larger Work(s), and to sublicense the foregoing rights on either these or other terms. This license is subject to the following condition: The above copyright notice and either this complete permission notice or at a minimum a reference to the UPL must be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Apache License ============== Version 2.0, January 2004 TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. **Definitions**. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. 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