A decision component running in a business rules service engine supports either stateful or stateless operation. The Reset Session check box in the Create Business Rules dialog provides support for these two modes of operation.

By default the Reset Session check box is selected which indicates stateless operation. Stateless operation means that, at runtime, the rule session is released after the decision component invocation.

When Reset Session is unselected, the underlying Oracle Business Rules object is kept in the memory of the business rules service engine at a separate location (so that it is not given back to the Rule Session Pool when the operation is finished). A subsequent use of the decision component re-uses the cached RuleSession object, with all its state information from the callFunctionStateful invocation, and then releases it back to the Rule Session pool after the callFunctionStateless operation is finished. Thus, when Reset Session is unselected the rule session is saved for a subsequent request and a sequence of decision service invocations from the same BPEL process should always end with a stateless invocation.