Build a PostgreSQL Interface for Oracle Eloqua Reporting Data using the CData JDBC Driver

There are a vast number of PostgreSQL clients available on the Internet. From standard Drivers to BI and Analytics tools, PostgreSQL is a popular interface for data access. Using our JDBC Drivers, you can now create PostgreSQL entry-points that you can connect to from any standard client.

To access Oracle Eloqua Reporting data as a PostgreSQL database, use the CData JDBC Driver for Oracle Eloqua Reporting and a JDBC foreign data wrapper (FDW). In this article, we compile the FDW, install it, and query Oracle Eloqua Reporting data from PostgreSQL Server.

Connect to Oracle Eloqua Reporting Data as a JDBC Data Source

To connect to Oracle Eloqua Reporting as a JDBC data source, you will need the following:

• Driver JAR path: The JAR is located in the lib subfolder of the installation directory.

• Driver class:

  cdata.jdbc.oracleeloquareporting.OracleEloquaReportingDriver
  

• JDBC URL: The URL must start with "jdbc:oracleeloquareporting:" and can include any of the connection properties in name-value pairs separated with semicolons.

  Oracle Eloqua Reporting supports the following authentication methods:

  • Basic authentication (User and Password)
  • OAuth 2.0 code grant flow
  • OAuth 2.0 password grant flow

  Basic Authentication (User and Password)

  To perform authentication with a user and password, specify these properties:

  • AuthScheme: Basic.
  • Company: The company name associated with your Oracle Eloqua Reporting account.
  • User: Your login account name.
  • Password: Your login password.

  OAuth Authentication (Code Grant Flow)

  To authenticate with the OAuth code grant flow, you must set AuthScheme to OAuth and create a custom OAuth application. For information about how to create a custom OAuth application, see the Help documentation.

  Then set the following properties:

  • InitiateOAuth: GETANDREFRESH. Used to automatically get and refresh the OAuthAccessToken.
  • OAuthClientId: The client Id assigned when you registered your application.
  • OAuthClientSecret: The client secret that was assigned when you registered your application.
  • CallbackURL: The redirect URI that was defined when you registered your application.

  When you connect, the driver opens Oracle Eloqua Reporting's OAuth endpoint in your default browser. Log in and grant permissions to the application. When the access token expires, the driver refreshes it automatically.

  OAuth Authentication (Password Grant Flow)

  With the OAuth password grant flow, you can use your OAuth application's credentials alongside your user credentials to authenticate without the need to grant permission manually via a browser prompt. You must create an OAuth app (see the Help documentation) to use this authentication method.

  Set the following properties:

  • AuthScheme: OAuthPassword
  • Company: The company's unique identifier.
  • User: Your login account name.
  • Password: Your login password.
  • OAuthClientId: The client Id assigned when you registered your custom OAuth application.
  • OAuthClientSecret: The client secret assigned when you registered your custom OAuth application.

  Built-in Connection String Designer

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

  java -jar cdata.jdbc.oracleeloquareporting.jar
  

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

  

  A typical JDBC URL is below:

  jdbc:oracleeloquareporting:AuthScheme=Basic;User=user;Password=password;Company=MyCompany;
  

Build the JDBC Foreign Data Wrapper

The Foreign Data Wrapper can be installed as an extension to PostgreSQL, without recompiling PostgreSQL. The jdbc2_fdw extension is used as an example (downloadable here).

1. Add a symlink from the shared object for your version of the JRE to /usr/lib/libjvm.so. For example:

   ln -s /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server/libjvm.so /usr/lib/libjvm.so
   

2. Start the build:

   make install USE_PGXS=1
   

Query Oracle Eloqua Reporting Data as a PostgreSQL Database

After you have installed the extension, follow the steps below to start executing queries to Oracle Eloqua Reporting data:

1. Log into your database.
2. Load the extension for the database:

   CREATE EXTENSION jdbc2_fdw;
   

3. Create a server object for Oracle Eloqua Reporting:

   CREATE SERVER OracleEloquaReporting 
   FOREIGN DATA WRAPPER jdbc2_fdw OPTIONS (
   drivername 'cdata.jdbc.oracleeloquareporting.OracleEloquaReportingDriver',
   url 'jdbc:oracleeloquareporting:AuthScheme=Basic;User=user;Password=password;Company=MyCompany;',
   querytimeout '15',
   jarfile '/home/MyUser/CData/CData\ JDBC\ Driver\ for\ Salesforce MyDriverEdition/lib/cdata.jdbc.oracleeloquareporting.jar'); 
   

4. Create a user mapping for the username and password of a user known to the MySQL daemon.

   CREATE USER MAPPING for postgres SERVER OracleEloquaReporting OPTIONS (
   username 'admin', 
   password 'test');
   

5. Create a foreign table in your local database:

   postgres=# CREATE FOREIGN TABLE  (
   _id text,
   _ text,
   _ numeric) 
   SERVER OracleEloquaReporting OPTIONS (
   table_name '');
   

postgres=# SELECT * FROM ;