CAJ | 학술논문

软件老化现象是影响软件可靠性的重要因素，长期运行的软件系统存在软件老化现象，这将影响整个业务系统的正常运行，给企事业单位带来无可估量的经济损失。软件老化出现的主要原因是操作系统资源消耗殆尽，导致应用系统的性能下降甚至崩溃或宕机。文中监测J2EE应用服务器系统资源的使用情况，考虑外界的负载变化，检测系统中软件老化现象，分析系统资源消耗何时达到临界值，从而帮助软件工程人员及时采取预维护手段，预防运行时系统中重大故障的发生。
연건노화현상시영향연건가고성적중요인소，장기운행적연건계통존재연건노화현상，저장영향정개업무계통적정상운행，급기사업단위대래무가고량적경제손실。연건노화출현적주요원인시조작계통자원소모태진，도치응용계통적성능하강심지붕궤혹탕궤。문중감측J2EE응용복무기계통자원적사용정황，고필외계적부재변화，검측계통중연건노화현상，분석계통자원소모하시체도림계치，종이방조연건공정인원급시채취예유호수단，예방운행시계통중중대고장적발생。
Software aging phenomenon plaguing in many long-running software systems is a contributing factor to impact software relia-bility and it will affect the normal operation of the whole service system and bring immeasurable economic loss to the enterprise. Software aging is characterized by progressive performance degradation or a sudden hang/crash in long-running software system due to resource exhaustion of operating system. In this paper,through monitoring system resource usage and considering system load variation,the soft-ware aging phenomenon in a J2EE application server is investigated to analyze when resource usage reaches the pre-determined thresh-old. Thus it will help software engineer take measures with preventive maintenance,and prevent the unplanned and expensive future sys-tem failures.