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�������պ����ѧѧ�� 2007, Vol. 33 Issue (10) :1204-1207    DOI:
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J2EE��Ϣϵͳ���ݷ��ʲ����ܼ�����Ż����
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Performance monitoring and optimization design of database access layer about J2EE management information system
Tang Wenzhong, Xu Xiaoman*
School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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�ؼ����� J2EE   ��Ϣϵͳ   Ӧ��   ���ݷ���   ���ܼ���   SQL�����Ż�     
Abstract�� Based on the character of J2EE management system performance, an application data layer and a database access monitoring tool were designed and implemented for the applications performance optimization during the development period. At the data layer, some special data access operation methods were provided to improve the data access efficiency and some convenient measures were adopted for posterior system performance optimization works. System database access steps and the performance parameters can be monitored with aspect-oriented programming(AOP) technology, which will help developer to find the key factor of side-effect during system tuning period. According to the monitoring results, developer can modify the source code of side-effect and then optimize the system performance bottle-neck SQL and replace the originally inefficient SQL sentence for the data layer.Therefore the purpose of optimization system database access performance may be achieved.
Keywords�� J2EE   information management   applications   database access   performance monitoring   SQL tuning     
Received 2006-11-01;
About author: ������(1968-),��,�ӱ���¹��,�о�Ա,tangwenzhong@buaa.edu.cn.
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������,������.J2EE��Ϣϵͳ���ݷ��ʲ����ܼ�����Ż����[J]  �������պ����ѧѧ��, 2007,V33(10): 1204-1207
Tang Wenzhong, Xu Xiaoman.Performance monitoring and optimization design of database access layer about J2EE management information system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(10): 1204-1207
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2007/V33/I10/1204
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