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  • PowerCenter 10.4.0
  • All Products

Table of Contents

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  1. Preface
  2. Performance Tuning Overview
  3. Bottlenecks
  4. Optimizing the Target
  5. Optimizing the Source
  6. Optimizing Mappings
  7. Optimizing Transformations
  8. Optimizing Sessions
  9. Optimizing Grid Deployments
  10. Optimizing the PowerCenter Components
  11. Optimizing the System
  12. Using Pipeline Partitions
  13. Performance Counters

Performance Tuning Guide

Performance Tuning Guide

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Optimizing Custom Transformations

Optimizing Custom Transformations

The Integration Service can pass a single row to a Custom transformation procedure or a block of rows in an array. You can write the procedure code to specify whether the procedure receives one row or a block of rows.
You can increase performance when the procedure receives a block of rows:
  • You can decrease the number of function calls the Integration Service and procedure make. The Integration Service calls the input row notification function fewer times, and the procedure calls the output notification function fewer times.
  • You can increase the locality of memory access space for the data.
  • You can write the procedure code to perform an algorithm on a block of data instead of each row of data.
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