Table of Contents

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  1. Preface
  2. Analyst Service
  3. Content Management Service
  4. Data Integration Service
  5. Data Integration Service Architecture
  6. Data Integration Service Management
  7. Data Integration Service Grid
  8. Data Integration Service Applications
  9. Mass Ingestion Service
  10. Metadata Access Service
  11. Metadata Manager Service
  12. Model Repository Service
  13. PowerCenter Integration Service
  14. PowerCenter Integration Service Architecture
  15. High Availability for the PowerCenter Integration Service
  16. PowerCenter Repository Service
  17. PowerCenter Repository Management
  18. PowerExchange Listener Service
  19. PowerExchange Logger Service
  20. SAP BW Service
  21. Search Service
  22. System Services
  23. Test Data Manager Service
  24. Test Data Warehouse Service
  25. Web Services Hub
  26. Application Service Upgrade
  27. Application Service Databases
  28. Connecting to Databases from Windows
  29. Connecting to Databases from UNIX
  30. Updating the DynamicSections Parameter of a DB2 Database

PowerCenter Integration Service Architecture Overview

PowerCenter Integration Service Architecture Overview

The PowerCenter Integration Service moves data from sources to targets based on PowerCenter workflow and mapping metadata stored in a PowerCenter repository. When a workflow starts, the PowerCenter Integration Service retrieves mapping, workflow, and session metadata from the repository. It extracts data from the mapping sources and stores the data in memory while it applies the transformation rules configured in the mapping. The PowerCenter Integration Service loads the transformed data into one or more targets.
To move data from sources to targets, the PowerCenter Integration Service uses the following components:
  • PowerCenter Integration Service process. The PowerCenter Integration Service starts one or more PowerCenter Integration Service processes to run and monitor workflows. When you run a workflow, the PowerCenter Integration Service process starts and locks the workflow, runs the workflow tasks, and starts the process to run sessions.
  • Load Balancer. The PowerCenter Integration Service uses the Load Balancer to dispatch tasks. The Load Balancer dispatches tasks to achieve optimal performance. It may dispatch tasks to a single node or across the nodes in a grid.
  • Data Transformation Manager (DTM) process. The PowerCenter Integration Service starts a DTM process to run each Session and Command task within a workflow. The DTM process performs session validations, creates threads to initialize the session, read, write, and transform data, and handles pre- and post- session operations.
The PowerCenter Integration Service can achieve high performance using symmetric multi-processing systems. It can start and run multiple tasks concurrently. It can also concurrently process partitions within a single session. When you create multiple partitions within a session, the PowerCenter Integration Service creates multiple database connections to a single source and extracts a separate range of data for each connection. It also transforms and loads the data in parallel.