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SNAPSHOT ISOLATION SUPPORT FOR DISTRIBUTED QUERY PROCESSING IN A SHARED DISK DATABASE CLUSTER

  • US 20130117307A1
  • Filed: 12/02/2011
  • Published: 05/09/2013
  • Est. Priority Date: 11/08/2011
  • Status: Active Grant
First Claim
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1. A method for snapshot isolation support for distributed query processing in a shared disk database cluster, the method comprising:

  • forming object identification data in a leader node of query execution in a shared disk database cluster;

    distributing at least one fragment of the query execution to at least one worker node in the shared disk database cluster; and

    utilizing the object identification data for multiversion concurrency control during query execution by the leader node and at least one worker node.

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