从升级前硬件的准备工作、测试环境准备工作、备份Oracle 8.1.7数据库、安装Oracle 11.2.0.4数据库几点建议、导入数据、升级后处理等详细地说明了如何将Oracle 8.1.7升级至Oracle 11.2.0.4，按照所写每一方面的操作完成医院Oracle数据库平台升级。解决了服务器负载过重及数据库并发数过多导致客户端无法连接的难题。%From hardware preparation before the upgrade, test environment preparation, backup of Oracle 8.1.7 database Oracle, suggestions on installation of Oracle 11.2.0.4 database, importing of data, treatment after the upgrade and other aspects, how to upgrade Oracle 8.1.7 to Oracle 11.2.0.4 is described in details, and in accordance with every aspect of operation written Oracle database platform upgrade of the hospital is completed. The client side cannot be connected due to heavy load on the server and too many concurrent databases. This problem is solved.
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