I am trying to connect to an Oracle database inside a Java application running on WebSphere. I need to be able to create an array descriptor to use in a call to a procedure.
@Alex Poole pointed me in the right direction. Maven was including an Oracle jar, version 10.2.0.1.0, and WebSphere had the same jar, but version 10.2.0.4.0.
After fixing the POM so that the 10.2.0.1.0 version jar didn't get deployed, the problem seems to be resolved.