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Showing posts from February, 2014

Oracle Database 12c - Far Sync Instance

A New Standby destination type is allowed in 12c Active Dataguard environment that ensures zero data loss failover and zero performance impact on Primary Database by a new concept called "Far Sync Instance". 

What is Far Sync Instance?
As we knew so far (until 11g), A SYNCHRONOUS redo transport Dataguard configuration impacts the availability and performance of Primary Database in order to protect data loss that happens due to network outages with its Standby Site. To avoid such issues and give benefit of the same zero Data loss to customers at additional cost, Oracle has introduced a new type of Instance called Far Sync Instance.  A Far Sync Instance usually is very close in distance to its Primary Database Network receives the redo synchronously from its Primary partner and then pushes it to its remote Standby Partner, plays a dummy physical standby role that actually fakes its Primary Partner to forget network outages as it takes the responsibility of managing redo to actua…