Wednesday, June 9, 2010

What is Internode Sync in RAC environment?

Internode sync is critical in RAC environment because it maintain proper co-ordination between processes on different nodes, preventing them from changing the same resource at the same time.

Internode sync guarantees that each instance see the most recent version of a block in its buffer cache.

This is the reason of having a necessity of Global Resources in RAC Environment

For more details read: Global Resources Topic in Oracle RAC.

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