To use ‘p_conc_request_id’ in the Oracle reports, then we need to use as a report parameter. In oracle reports we register the RDF reports as a Concurrent Program and then run these concurrent program as a Concurrent request. So if you want to use the Oracle Concurrent Request ID of the Concurrent Program in its Report then you have to create this ‘p_conc_request_id’ as a Parameters in the RDF as well as in the Concurrent Program too. This will pass the Oracle Concurrent Request Id from Oracle to Report.