There has been a steady increase in the use of mobile computing, especially with appliances such as sensors. The main challenge in this scenario is to increase network sensor lifetime. Cluster computing integration with wireless sensor networks can represent an interesting answer for high-performance computing to monitor several environments. Computational resources available from cluster configurations are cost effective components to improve several classes of applications in many organizations. Scientific, industrial and commercial applications are more relying on cluster performance. OSCAR is a useful open software approach to manage cluster of workstations. In this article, we present a middleware design and implementation that integrates an OSCAR cluster configuration with a wireless sensor network environment.