The Research Of Technology For The Monitor Agent System On Distributed Information Sources In Information Integrator

Nowadays, among plenty of various information, it is great important to research and find out the most useful and helpful one shortly from the various distribution sources of information for the client. The technology of data integration is one of the most effective ways. To have intellectualized continuance information sources in the data integration, we can install the monitor agent system to monitor every information source, and inform the subscribers any change of the data.In this paper, the work to be done is to study and implement a source of information distributed monitoring agents in order to enable it to simultaneously monitor multiple sources of information log-read system and inquiring service system, through external read from the database and analysis of the database transaction log manner. This article focuses the research on the Oracle database, including specific research work the following:1. Do research on how to transfer the original monitor system into the distributed architecture, reconstruction the original structure of update-detector in the monitoring agents, to achieve the purpose of monitoring several log reading and inquiring service system of information sources at the same time. And then improve the application.2. Separate the log reader and log analysis module in the Update-Detector modules. Harmonize their communication protocols and task. Then enable the log analyzing module analysis logs from multiple sources of information transmission. Correctly calculate and report out the incremental of each service system and submit away. This is the main research purpose of this thesis.3. In distributed systems, establish "sources of information management", "Log Manager" and other components to achieve the information sources information and the log file management. this makes the distributed monitor agent works properly.