DataGuard protection mode - difference between max and max performance available

Hi all

for maximum performance - transaction can commit both redo entries are written in redolog on the main site. Redo data is written to an asynchronous backup site.


(T1) the main site to the backup site connection fail, recovery of desynchronization logs will sync on once the connection is established?

to see availability max - transaction can commit both redo entries are written in redolog on the main site + 1 of the standbysite.  If the main site to the backup site connection fail, it will behave as performance Max once the connection is restored, he will return to the max availability again.

(Q2) if the main site to the backup site connection fail, recovery of desynchronization logs will sync on once the connection is established?

Q3) in this case, what is the real difference between mode 2 above?

Kind regards

Noob

Q3 - performance Maximum does not wait do it write in standby when the standby is available; is maximum availability. If the reserves are not available, they are the same.

Q1/q2 are the same question and the answer is 'yes '.

Tags: Database

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