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The architecture of Pool Advisor for DB2 consists of several key components designed to facilitate automated buffer pool tuning. The core components include the Data Collector, the Analysis Engine, and the Recommendation Engine. The Data Collector gathers performance metrics from the DB2 subsystem using DB2 monitoring interfaces.
These interfaces provide access to various performance statistics, including buffer pool hit ratios, I/O rates, and CPU utilization. The Analysis Engine processes the collected data to identify performance bottlenecks and inefficiencies. It uses algorithms to analyze the data and determine optimal buffer pool sizes and configurations.
The Recommendation Engine generates specific tuning recommendations based on the analysis performed by the Analysis Engine. These recommendations are presented to the user, who can then implement them using standard DB2 commands. The tool uses DB2 monitoring data, including statistics from the DB2 catalog and performance traces.
The communication between components is primarily internal, with data flowing from the Data Collector to the Analysis Engine and then to the Recommendation Engine. The tool does not use external databases or storage mechanisms for its primary operations. The administrative interface is available through both a command-line interface (CLI) and a graphical user interface (GUI).
The CLI allows for scripting and automation of tasks, while the GUI provides a user-friendly interface for monitoring and management.
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