With the development of Web technology, accessing OLAP services through Web is a strong trend. The characteristics of accessing OLAP services based on Web were analyzed. In order to solve the problems of poor performance and license limitation, the concept of object pool was introduced into OLAP service systems. Due to the support of OLAP Object pool, web users can access the OLAP services easily and efficiently.

OLAP is one of important techniques in DSS.The computation of CUBE is the basis of ad hoc query in OLAP.In order to advance the corresponding to querying,we must pre aggregate data in tables or multidimensional databases.Typically,the computation of CUBE consists of materializing strategy,the choice of materialized paths and its optimization and CUBE algorithms.Based on them,this paper analyzes and expatiates concepts,strategies,steps,methods and performances about the computation of CUBE in details.