Multiple choice technology databases

The three dataguard services are:

  1. redo transport service,log applyservice,Role transition

  2. log applyservice,Role transition,Failover service

  3. redo transport service,Role transition,Failover service

  4. redo transport service,log applyservice,Failover service
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A Correct answer
Explanation

The three core components of Oracle Data Guard are Redo Transport Services (transferring redo data), Apply Services (applying redo data to standby databases), and Role Transitions (switchover and failover). Failover is a specific transition event, not an independent service category like redo transport or apply services.

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