Connect to Oracle Data in RapidMiner

This article shows how you can easily integrate the CData JDBC driver for Oracle into your processes in RapidMiner. This article uses the CData JDBC Driver for Oracle to transfer Oracle data to a process in RapidMiner.

Connect to Oracle in RapidMiner as a JDBC Data Source

You can follow the procedure below to establish a JDBC connection to Oracle:

1. Add a new database driver for Oracle: Click Connections -> Manage Database Drivers.
2. In the resulting wizard, click the Add button and enter a name for the connection.
3. Enter the prefix for the JDBC URL: jdbc:oracleoci:
4. Enter the path to the cdata.jdbc.oracleoci.jar file, located in the lib subfolder of the installation directory.
5. Enter the driver class: cdata.jdbc.oracleoci.OracleOCIDriver
6. Create a new Oracle connection: Click Connections -> Manage Database Connections.
7. Enter a name for your connection.
8. For Database System, select the Oracle driver you configured previously.
9. Enter your connection string in the Host box.

   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.

   Built-in Connection String Designer

   For assistance in constructing the JDBC URL, use the connection string designer built into the Oracle JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

   java -jar cdata.jdbc.oracleoci.jar

   Fill in the connection properties and copy the connection string to the clipboard.

   A typical connection string is below:

   User=myuser;Password=mypassword;Server=localhost;Port=1521;
10. Enter your username and password if necessary.

You can now use your Oracle connection with the various RapidMiner operators in your process. To retrieve Oracle data, drag the Retrieve operator from the Operators view. With the Retrieve operator selected, you can then define which table to retrieve in the Parameters view by clicking the folder icon next to the "repository entry." In the resulting Repository Browser, you can expand your connection node to select the desired example set.

Finally, wire the output to the Retrieve process to a result, and run the process to see the Oracle data.