When the database instance fails on oracle , there is no need for human intervention as the oracle smon background process will detect the problem as soon as you restart your machine 当oracle上的数据库实例失败时，不需要人工干预，因为只要您重启计算机， oracle smon后台进程就会检测问题。
We conclude the discussion with a brief look at underlying and target 64 - bit db2 database instance setup and provide some best practices recommendations and performance enhancement tips 在结束讨论前，我们将简要地看一看基本的64位db2目标数据库实例，并提供一些最佳实践建议和性能提高技巧。
Unlike embedded cloudscape , network server enables you to have two different versions of websphere application server running on different systems with workload managed enabled clusters all accessing the same database instance figure 1 不像嵌入式cloudscape ， network server允许您通过管理负载量使得运行在不同系统上的不同版本的websphere application server都可以访问相同的数据库实例（图1 ） 。
Because a single derby database instance is limited to allowing simultaneous access only through jdbc drivers loaded by the same class loader , the database configuration and sql login module configuration must be deployed as parts of a single application 因为单个derby数据库实例被限制为只允许通过由同一个类装载器装载的jdbc驱动程序进行的同时访问，所以数据库配置和sql登录模块配置必须部署为单个应用程序的各个部分。
The thesis introduces the basic character and main idea of the rough set theory , giving an applied model in kdd system , and uses this model for knowledge reasoning in a business enterprises sale database . furthermore , a data analysis system is built to give the final decision rules for the manager 文章介绍了粗糙集理论的基本特征和主要思想，给出粗糙集方法在知识推理中的实际应用模型，并应用这一模型对一个企业的销售数据库实例进行具体的分析，建立数据分析系统，通过计算最终得到管理所需的决策规则。
There are various impacts for performance of the j2ee based web system , such as hardware ( the computer and network ) , operating system , java virtual machine , database management system , database instance , j2ee server and j2ee application etc . this paper will associate the process model of web system performance tuning and the computer assistant solution of web system performance tuning , and aim at code performance tuning of the j2ee framework based web system , mainly expatiate the design and implementation of web system performance tuning supporting system ( wpt ) 目前,基于j2ee的web系统在企业级解决方案中处于主导地位,影响基于j2ee的web系统性能的因素是多方面的,包括:硬件(计算机和网络) 、操作系统、 java虚拟机、数据库管理系统、数据库实例、 j2ee服务器、 j2ee应用程序等方面。本文将结合web系统性能优化过程模型和web系统性能优化计算机辅助解决方案,针对基于j2ee框架web系统中的代码性能优化问题,重点阐述web系统性能优化辅助系统( wpt )的设计与实现。
