这可以改变不同水平的事物，甚至包括打开DNA、关闭dna。
This can change things on many levels, even including turning DNA on or off.
这些设施包括打开文件句柄(文件描述符)、共享内存、进程同步原语和当前目录。
Facilities include open file handles (file descriptors), Shared memory, process synchronization primitives, and current directory.
通常，此过程包括打开和关闭开关对象或更改跟踪级别，然后重新启动应用程序。
Typically this involves turning the switch objects on and off or by changing the tracing levels, and then restarting your application.
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