Database Connection Service Based on J2EE

In this paper the architecture of database connection service in application server is discussed.The standard design and function implementation of connection manager module which supports both connection pool and distributed transaction is illuminated in detail.The design not only makes applications more portable, but also greatly improves the performance of application server. A good choice is provided for efficient and transparent accessing all kinds of relation database management system. It is very fit for concurrent multiuser access in distributed computing environment.