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  1. Preface
  2. Understanding Pipeline Partitioning
  3. Partition Points
  4. Partition Types
  5. Pushdown Optimization
  6. Pushdown Optimization and Transformations
  7. Real-time Processing
  8. Commit Points
  9. Row Error Logging
  10. Workflow Recovery
  11. Stopping and Aborting
  12. Concurrent Workflows
  13. Grid Processing
  14. Load Balancer
  15. Workflow Variables
  16. Parameters and Variables in Sessions
  17. Parameter Files
  18. FastExport
  19. External Loading
  20. FTP
  21. Session Caches
  22. Incremental Aggregation
  23. Session Log Interface
  24. Understanding Buffer Memory
  25. High Precision Data
  26. POWERCENTERHELP

Advanced Workflow Guide

Advanced Workflow Guide

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Commit Points Overview

Commit Points Overview

A commit interval is the interval at which the Integration Service commits data to targets during a session. The commit point can be a factor of the commit interval, the commit interval type, and the size of the buffer blocks. The commit interval is the number of rows you want to use as a basis for the commit point. The commit interval type is the type of rows that you want to use as a basis for the commit point. You can choose between the following commit types:
  • Target-based commit.
     The Integration Service commits data based on the number of target rows and the key constraints on the target table. The commit point also depends on the buffer block size, the commit interval, and the Integration Service configuration for writer timeout.
  • Source-based commit.
     The Integration Service commits data based on the number of source rows. The commit point is the commit interval you configure in the session properties.
  • User-defined commit.
     The Integration Service commits data based on transactions defined in the mapping properties. You can also configure some commit and rollback options in the session properties.
Source-based and user-defined commit sessions have partitioning restrictions. If you configure a session with multiple partitions to use source-based or user-defined commit, you can choose pass-through partitioning at certain partition points in a pipeline.