Method for controlling real-time database system
A control method, database technology, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc.
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[0014] The real-time database system includes redundantly configured real-time servers or front-end communication processors, as well as devices and subsystems that communicate with the real-time servers or front-end communication processors respectively. The current real-time server or front-end communication processor for data collection and release is called the host , the standby real-time server or front-end communication processor is called the standby machine, when the host's own working state is abnormal, the real-time database system performs redundancy switching. A common FEP system consists of two mutually redundant FEP devices. The control method of the present invention is as follows: each FEP first independently collects data from each of the connected subsystems in a protocol conversion or data collection cycle. and protocol conversion. When the communication data link of a subsystem fails and the main FEP detects the failure (that is, if the subsystem returns t...
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