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Using the CData ODBC Driver for Oracle in PyCharm

Connect to Oracle as an ODBC data source in PyCharm using the CData ODBC Driver for Oracle.

The CData ODBC Drivers can be used in any environment that supports loading an ODBC Driver. In this tutorial we will explore using the CData ODBC Driver for Oracle from within PyCharm. Included are steps for adding the CData ODBC Driver as a data source, as well as basic PyCharm code to query the data source and display results.

To begin, this tutorial will assume that you have already installed the CData ODBC Driver for Oracle as well as PyCharm.

Add Pyodbc to the Project

Follow the steps below to add the pyodbc module to your project.

  1. Click File -> Settings to open the project settings window.
  2. Click Project Interpreter from the Project: YourProjectName menu.
  3. To add pyodbc, click the + button and enter pyodbc.
  4. Click Install Package to install pyodbc.

Connect to Oracle

You can now connect with an ODBC connection string or a DSN. See the Getting Started section in the CData driver documentation for a guide to creating a DSN on your OS.

To connect to Oracle, you'll first need to update your PATH variable and ensure it contains a folder location that includes the native DLLs. The native DLLs can be found in the lib folder inside the installation directory. Once you've done this, set the following to connect:

  • Port: The port used to connect to the server hosting the Oracle database.
  • User: The user Id provided for authentication with the Oracle database.
  • Password: The password provided for authentication with the Oracle database.
  • Service Name: The service name of the Oracle database.

Below is the syntax for a DSN:

[CData OracleOCI Source] Driver = CData ODBC Driver for Oracle Description = My Description User = myuser Password = mypassword Server = localhost Port = 1521

Execute SQL to Oracle

Instantiate a Cursor and use the execute method of the Cursor class to execute any SQL statement.

import pyodbc cnxn = pyodbc.connect('DRIVER={CData ODBC Driver for OracleOCI};User = myuser;Password = mypassword;Server = localhost;Port = 1521;') cursor = cnxn.cursor() cursor.execute("SELECT CompanyName, City FROM Customers WHERE Country = 'US'") rows = cursor.fetchall() for row in rows: print(row.CompanyName, row.City)

After connecting to Oracle in PyCharm using the CData ODBC Driver, you will be able to build Python apps with access to Oracle data as if it were a standard database. If you have any questions, comments, or feedback regarding this tutorial, please contact us at support@cdata.com.