solidDB Help : Samples : HotStandby sample : Watchdog sample application : Failure situations and watchdog actions
  
Failure situations and watchdog actions
This topic describes how a typical watchdog program should work in specific failure scenarios that are commonly encountered.
The scenarios are in the context of either a server failure or a broken communication link between the primary and secondary server, or between one of the servers and the watchdog.
See
Primary server fails
Secondary server fails
Communication link between primary and secondary servers is down
Watchdog fails, or the communication link between the watchdog and one or both of the servers fails
Communication links with the primary server from both the secondary server and the watchdog are down
Communication links with the secondary server from both watchdog and the primary server are down
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Watchdog sample application