Question: What is the advantage of using more
than one redo log thread?
Answer:
By Steve Callan: In RAC, there are no advantages to
using more than one thread. That's just how Oracle works in a
multiple instance architecture such as RAC.
Single
instance/single database means the redo logs form one thread, so
there is no difference between a thread and the redo log. Multiple
instance architecture = each instance has its own set of redo logs
and forms a thread of those therein.
Also see these important notes on
Oracle RAC redo log thread management.
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