gc current block 2-way
Short Description
This event indicates that the requested current buffer was transferred from another instance in the cluster, and 2 network hops were involved in the request.
Detailed Description​
A RAC Global Cache Fusion wait. This event indicates that the requested current buffer was transferred from another instance in the cluster, and 2 network hops were involved in the request. The Cache Fusion protocol guarantees that requests are fulfilled in 3 hops or less, regardless of the number of instances in the cluster.
How to reduce this wait​
Additional Links​
Oracle Docs - gc-current block 2-way
Oracle Docs - Analyzing Cache Fusion Transfer Impact Using GCS Statistics
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