The conformity of transactional attributes of components is an important issue in designing a large database application system. Although corresponding techniques called Auto-Transaction have been adopted in some products, such as Microsoft Transaction Server (MTS), to protect unconformity errors, there are still many problems in application system. In order to test the unconformity a new method based on the Performance Evaluation Architecture Description Language(PEADL in short) is provided. The conformity of transactional attributes of components is test by comparing the PEADL description of the protocol of transactions summit and the behaviors of simulating performance. To support our viewpoint we have also designed an experiment.