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Automatic failover configuration with redundant abservers

  • US 20080126846A1
  • Filed: 11/24/2006
  • Published: 05/29/2008
  • Est. Priority Date: 11/30/2005
  • Status: Active Grant
First Claim
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1. An automatic failover configuration comprising:

  • participants includinga primary database system that processes transactions and produces redo data therefor,a standby database system that receives the redo data via a redo communications link, andan active observer that exchanges first control messages with the primary database system and the standby database system;

    one or more redundant observers; and

    an active observer monitor that detects absence of the active observer and replaces the absent active observer with an observer of the redundant observers.

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