RE: DataGuard - Maximum Availability mode vs sync detection

I am talking about synchronization if terms of redo log records. Simply put, a third party performing failover needs to know if standby is in sync or not.

If DG is configured in maximum protection mode then fine. However data protection either jeopardizes availability quite a lot or one has to set more then one standby on separated hardware.

If DG is configured in maximum availability mode(note the word *availability* but not *protection*) then data protection will be jeopardized (scenario if primary crashes while standby is down) The real issue is that the third party is never sure about if standby lags or not.
If it would then it was possible to proceed with failover or cancel it if data protection is a "must be"    

-----Original Message-----
From: Polarski, Bernard [mailto:Bernard.Polarski_at_atosorigin.com] I don't see where is the real issue:

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