See the Javadocs in <EPM_ORACLE_HOME>/common/docs/ReportingAnalysis/SDK/javadoc.
This Exception class can potentially be thrown during the initial invocation of a SessionFactory#getInstance() method by your program when attempting to establish contact with EPM Workspace. If your program handles this exception, one of these events can occur:
In the last case, check to make sure that the port number specified corresponds to the port on which the Service Broker is listening.