Table of Contents

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  1. Preface
  2. Performance Tuning Overview
  3. Target Optimization
  4. Source Optimization
  5. Transformation Optimization
  6. Mapping Optimization
  7. Partitioned Mapping Optimization
  8. Run-time Optimization
  9. SQL Data Service Optimization
  10. Web Service Optimization
  11. Connections Optimization
  12. Data Transformation Optimization

Performance Tuning Guide

Performance Tuning Guide

Optimization Methods

Optimization Methods

The Data Integration Service applies optimization methods to reduce the number of rows to process in the mapping. You can configure the optimizer level for the mapping to limit which optimization methods the Data Integration Service applies.
The Data Integration Service can apply the following optimization methods:
  • Pushdown optimization
  • Early projection optimization
  • Early selection optimization
  • Branch pruning optimization
  • Push-into optimization
  • Predicate optimization
  • Global predicate optimization
  • Cost-based optimization
  • Dataship-join optimization
  • Semi-join optimization
The Data Integration Service can apply multiple optimization methods to a mapping at the same time. For example, the Data Integration Service applies the early projection optimization, predicate optimization, global predicate optimization, branch pruning optimization, and early selection optimization or push-into optimization methods when you select the normal optimizer level.

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