Obtain a connection to the EIS. To do so you can use the portal destination service or, in the case of an EIS represented by a portal system, you can use the connector gateway service directly. For use of the connector gateway service, see the example in Using the JDBC Connector.
Note
Although a connection can be obtained without using portal services, there is little advantage to it. The developer would need to be familiar with the connector, to know the JNDI name of its ConnectionFactory, and would have to handle authentication, setting username and password, for example, to its ConnectionSpec.