本文假设已经排除了所有其他可能性，如操作系统、硬件或 DB2 的其他性能领域等，问题完全缩小到访问计划上。
This article assumes that you have narrowed the problem down to just the access ploan, having exhausted all other possibilities such as operating system, hardware, or other performance areas in DB2.
高性能集群主要用于处理复杂的计算问题，或应用于大规模科学计算领域，例如对石油勘探地震资料进行处理。
The High-Performance Computing Cluster is mainly used to process complex calculation problem, or applied in large scientific calculation domain, such as petroleum exploration seismic data processing.
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