DMP是什么文件？有什么用？

dmp文件是系统错误的内存转储文件。当电脑蓝屏或系统崩溃时，Windows会将错误报告存储在一个后缀名为“.DMP”的文件里。该文件记录了系统错误的详细信息，技术人员可以分析它找到系统崩溃的原因，从而解决问题。分析dmp文件的步骤如下：

1、首先我们要找到dump文件，dump文件则是记录了蓝屏之前数据在内存中的情况。

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2、然后在“我的电脑”图标上右键“属性”打开系统属性，可在启动和故障恢复中找到dmp文件。

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3、dump文件需要微软专门的分析工具，需要自行下载安装，下载后，点击下载的文件运行安装。

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4、一直点“下一步”默认安装即可。安装后，在启动菜单找到启动程序，运行起来。

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5、然后运行分析工具

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6、在分析前我们先要做个简单的设置

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7、会d出如下提示，我们在文本框输入：srv*D:mwin7symbolsx86*http://msdl.microsoft.com/download/symbols，按ok就设置完毕。

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8、然后点击File菜单目录下的点击OpenCrashDump菜单项，选择你所要分析的dmp文件。

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9、然后就会对dmp文件进行分析了。

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dmp是数据库导出的文件，用以备份数据库用，一般会用exp命令来导出，用imp命令来导入也就是恢复数据库。\x0d\x0a\x0d\x0a导出数据库备份dmp文件\x0d\x0aexp user/password@orcl file=d:\dataBak\oracle.dmp log=e:\log.txt full=y\x0d\x0a导入数据库备份dmp文件\x0d\x0aimp user/password@orcl file=d:\dataBak\oracle.dmp log=e:\log.txt ignore=y full=y\x0d\x0a\x0d\x0a基本就用这些就可以了，我每次导出导入就只用了这些参数，都能满足需求的。\x0d\x0a\x0d\x0afull=y就是全部，把表、存储过程、函数等一起导出，导入时也一样，导入中的ignore=y是忽略重复表，就是原来你存在这些表中的某个的话，会报错误信息，加上这个就不会了。

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