Saturday, 9 August 2014

Advantages and Disadvantages of Three Phase Commit Protocol

Advantages and Disadvantages of 3PC Protocol

Advantages of 3PC Protocol

  • The Blocking problem found in 2PC can be avoided (in certain occasions, especially when at least not more than k sites failed)

Disadvantages of 3PC Protocol

  • Network partitions (network segments) would cause Blocking Problem, especially if more than k sites are part of any partitions.  
  • Long latency due to the number of messages to be transferred between sites on taking decision. That is, it involves 3 phases and all the 3 phases involve communication between sites.

Three Phase Commit (3PC) Protocol - External Link

Three phase commit protocol
advantages of 3PC protocol in distributed databases
disadvantages of three phase commit (3PC) protocol in distributed database

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