实践证明了用中断实现前后台切换、对DOS重入问题的处理、嵌套和屏幕保护等都是有效的解决方法。
The practice proves that interrupt is a useful method for foreground -background exchanging, the DOS reenter processing, the embedding and screen contents saving.
对于AIX, iptrace是一个后台守护进程，因此您必须启动和停止该工具，以便对进程状态进行切换。
With AIX, the iptrace is a background daemon, so you must explicitly start and stop the tool to switch the process on and off. For example, to start, type.
在这种情况下，当无法联系主要服务器，或者它由于某种问题而关闭时，secldapclntd后台程序将自动切换到辅助服务器。
In the situation, when the primary server cannot be contacted or if it goes down due to some problem, secldapclntd daemon automatically switches to the secondary server.
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