它还包括大量可以应用到转换过程中的自定义规则及优化器。
It also includes a number of customized rules and optimizers that can be applied to the conversion process.
在使用RUNSTATS之后需要重新绑定使用静态SQL的应用程序，这样查询优化器就可以选择新统计信息所给出的最佳存取方案。
Rebind applications that use static SQL after using RUNSTATS so that the query optimizer can choose the best access plan given the new statistics.
然而需要注意的是，先进的优化器在生成一个特定的访问计划时，必然有其原因，所以在应用指南之前，务必理解是什么原因导致查询的性能低下。
However, note that the state-of-the-art optimizer has a reason to generate a particular access plan, so it is important to ensure that we understand the inefficiency before we apply the guidelines.
INDEX元素可以选择性地指定两个或更多索引，它们将按照指定的顺序应用到“IXAND”计划中，并且优化器不会向IXAND添加更多的索引。
The index elements can optionally specify two or more indexes that will be used in the 'IXAND' plan in the specified order and no additional indexes will be added by the optimizer to the IXAND.
如果优化器无法应用准则，那么它将返回警告437，其原因代码为13。
If the optimizer was not able to apply the guideline, it returns warning 437 with reason code 13.
存储和应用外部优化器指令。
如前所述，当应用程序需要一个DELETE操作时，DB 2优化器将决定该操作适用于传统DELETE操作还是rollout DELETE操作。
As previously noted, when a DELETE operation is requested by an application, the DB2 optimizer will determine if it qualifies for a traditional or rollout DELETE operation.
当应用程序向Informix发送一个查询，Informix优化器会决定是否应该将此查询发送至IWA。
When an application sends a query to Informix, the Informix optimizer decides whether the query should be sent to IWA.
所以说应该优化搜索算法，使其能处理一般情况，如列出单元中所有的服务器、节点或者J2EE应用程序等等。
That said, the search algorithm is optimized to handle common scenarios, such as listing all the servers or nodes or J2EE applications in a cell, etc.
在这种情况下，即便应用程序刷新数据，也仍然会由服务器缓存，以实现优化。
In this case, even if the application flushes the data, it may still be buffered by the server for optimization.
如果没有出现任何警告信息或诊断消息，那么表明优化器已经成功应用了准则。
When no warning message or diagnostic message is issued, it indicates that the optimizer has applied the guideline.
但是通过使用REOPT绑定选项，优化器将会根据应用程序在运行时所提供的值来生成存取计划，而不是使用绑定过程中创建的一般计划。
But with the REOPT bind option, the optimizer will generate an access plan against the value provided by the application during runtime, instead of using the generic plan created during bind.
在优化的本地适配器REGISTERAPI调用期间，应用程序表明要与哪个单元、节点和服务器进行通信。
During the optimized local adapters REGISTER API call, the application indicates which cell, node, and server it wishes to communicate with.
以下场景帮助更进一步描述如何在集群应用服务器环境中配置并使用客户端优化。
The following scenario is intended to help further describe how to configure and work with client optimization in clustered application server environments.
DS8700凭借其可伸缩性、新的存储层优化以及广泛的服务器支持可以满足最为关键的业务应用程序的需求。
DS8700 can meet the needs of the most critical business applications with its scalability, new storage tier optimization, and broad server support.
数据联合模式的功能可以通过使用数据相关的技术(如优化器或补偿)或自己开发的应用程序来实现。
The functionality of the data federation pattern can be implemented using either database-related technologies such as optimizer or compensation, or by home-grown applications.
有时候，我们希望更直接地影响优化器，同时尽量避免更改应用程序。
Sometimes we hope to influence the optimizer more directly, with minimum application changes if possible.
要利用增加的缓冲池，您必须重新绑定应用程序，以使优化器在决定其访问策略时考虑缓冲池大小。
To take advantage of the increased buffer pool, you must rebind the applications for the optimizer to consider the buffer pool size when deciding its access strategy.
应用服务器供应商在其内存空间实现池管理器，并根据需要动态改变池的大小，从而优化资源的使用。
The application service provider implements the pool manager in its memory space and can optimize resource usage by dynamically altering the pool size, based on demand.
调整应用程序服务器能够对优化性能大有帮助。
Tuning an application server can go a long way in optimizing performance.
一种类似于微处理器的的设备，不同的是它内部的CPU被优化，用于特定的应用，如离散信号处理。
A device that is similar to a microprocessor, except that the internal CPU has been optimized for use in applications involving discrete-time signal processing.
为了在使用并发消息传递时优化性能，我们必须将注意力转向应用程序服务器托管的许多对象池。
To tune performance when using concurrent message delivery, we must turn our attention to a number of object pools managed by the application server.
当应用程序向设备的主机服务器发送一个查询时，处理流程开始。 主机服务器将编译该查询并创建一个优化的查询执行计划。
The action begins when an application sends a query to the appliance host server, which compiles the query and creates an optimized query execution plan.
外部地址空间应用程序需要首先使用一个优化的本地适配器服务器API(主机服务或接收请求)并标识它们自身作为目标服务。
External address space applications are required to first use one of the optimized local adapter server APIs (Host service or Receive Request) and identify themselves as target services.
服务器编译器针对最大峰值操作速度进行了优化，适用于需要长期运行的服务器应用程序。
The server compiler has been optimized to maximize peak operating speed, and is intended for long-running server applications.
服务器通常比开发人员价格便宜，而较小的性能优化常常不值得开发人员浪费时间，并且会降低应用程序的可维护性。
Servers are generally much cheaper than developers, and performance micro-optimizations usually aren't worth the penalty in developer time and reduced application maintainability.
本文解释什么是分布统计信息、分布统计信息在哪些情况下尤为重要，以及应用程序开发人员应该考虑些什么，才能使DB 2优化器创建有效的访问计划。
This article explains distribution statistics, when they are important, and what application developers should consider so that the DB2 optimizer can create efficient access plans.
在第7部分“使用xml二进制优化打包规范加速Web服务应用程序”中，我说明了xop包在处理Web服务方面比xml解析器更有效的原因。
In Part 7, "Speed-up Web services applications with the XML-binary Optimized Packaging Specification," I showed why the XOP package is more effective than XML parsers in processing Web services.
不论Ajax应用程序如何优化，使用了哪些硬件加速器，如何降低或消除了代码冗余，您仍然需要解决互操作性问题。
No matter how well Ajax applications are optimized, what hardware accelerators have been used, or how code redundancy has been reduced or eliminated, you need to resolve interoperability issues.
您任何时候都可以为移动Web应用程序优化服务器调用，因为它可以真正改善慢速移动网络上的用户体验。
Any time you can optimize server calls for a mobile Web application, it can really improve the user experience over slow mobile networks.
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