The disadvantages section of the Wikipedia entry for Oracle Data Guard says:
If the network link connecting primary and standby is over-subscribed, the redo logs are not applied in chronological order
Is this true? I can't find a reference to this in the Oracle documentation.
Best Answer
I simply do not believe. It's impossible. There is process called FAL (Fetch Archive Log), it can happen that redo-logs are not TRANSFERRED in chronological order, but anyway they must be APPLIED in chronological order.
Also logical standby has can have some gotchas but those are not related to network link. (For example for some reason LOCK TABLE statement is not propagated to slave)