Table of Contents

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  1. Preface
  2. Understanding Pipeline Partitioning
  3. Partition Points
  4. Partition Types
  5. Pushdown Optimization
  6. Pushdown Optimization 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

Configuring Recovery to Resume from the Last Checkpoint

Configuring Recovery to Resume from the Last Checkpoint

Use the following rules and guidelines when configuring recovery to resume from last checkpoint:
  • You must use pass-through partitioning for each transformation.
  • You cannot configure recovery to resume from the last checkpoint for a session that runs on a grid.
  • When you configure a session for full pushdown optimization, the Integration Service runs the session on the database. As a result, it cannot perform incremental recovery if the session fails. When you perform recovery for sessions that contain SQL overrides, the Integration Service must drop and recreate views.
  • When you modify a workflow or session between the interrupted run and the recovery run, you might get unexpected results. The Integration Service does not prevent recovery for a modified workflow. The recovery workflow or session log displays a message when the workflow or the task is modified since last run.
  • The pre-session command and pre-SQL commands run only once when you resume a session from the last checkpoint. If a pre- or post- command or SQL command fails, the Integration Service runs the command again during recovery. Design the commands so you can rerun them.
  • You cannot configure a session to resume if it writes to a relational target in bulk mode.


Updated July 04, 2018