Observer is Dbvisit StandbyMP component which is embedded in dbvcontrol and is operatated automatically by starting or stopping dbvctonrol. Purpose of observer is to periodically check primary and standby database, primary and standby server, send notifications and / or initiate Automatic failover.
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1. Observer Concept
Observer performs check whether host is alive by checking the dbvagentmanager. If the dbvagentmanager is unreachable, the host is then reported as down by observer. Observer checks the database status through dbvagentmanager.
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