Your performance needs may require you to place the database log files on different disk arms than the database data or indicate some other placement needs.

您的性能需求可能需要将数据库日志文件放置在与数据库数据不同的磁盘上，或需要采取其他放置方式。

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On the contrary, consider the possible 'footprint' your software may leave on a client's systems: preference files, log files, data sets, configuration files, trace files; you name it.

事实上恰恰相反，想想您的软件可能在客户系统上留下的‘痕迹’： 预置文件，日志文件，数据场，配置文件，跟踪文件；您可以给它命名。

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Log message data on error scenarios.

记录关于错误场景的消息数据。

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When you understand the risks and the environment, you can log useful data on access and transactions in your environment.

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In the process, it will log millions of road miles, generate mountains of data on the safety and benefits of the car and crack lingering problems.

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Think of a web server log, something that is examined by the data center staff on a regular basis to help diagnose problems.

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