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Process exception This occurs when there is a failure with components used by a process or service. Process exceptions are environmental errors (for example, memory issues, connectivity failure, and so on). These are also called nonrecoverable exceptions.
imageBusiness exception This occurs as a result of a business rules decision being internally triggered. A business exception is happens when a process is unable to proceed due to one of the following:

From

Cover of OCM Java EE 6 Enterprise Architect Exam Guide (Exams 1Z0-807, 1Z0-865 & 1Z0-866), 3rd Edition

Note

types of exceptions at architectural level.