Question: How do I use the
12c FastSync feature?
Answer: (by Earl
Shaffer) Data Guard maximum availability supports the use of
the noaffirm redo transport parameter. A
standby database returns receipt acknowledgment to its
primary database as soon as redo is received in memory. The
standby database does not wait for the Remote File Server
(RFS) to write to a standby redo log file.
This
noaffirm parameter provides increased primary database performance in
Data Guard and
SYNC for redo transport. FastSync isolates the primary database
in a maximum availability configuration from any performance
impact due to slow I/O at the standby database.
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