When working with a JDBC data source in a WebLogic Java EE application, an application developer typically writes code to perform the following steps: Request a connection from the data source, look up the data source using the JNDI name, and close the connection to return it to the data source. These are common operations in managing database connections in such an environment. Testing the connection to verify the database's availability and adding a new connection to the data source if none are available are generally handled by the data source configuration and connection pool management, not the application code.