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 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

Advanced Workflow Guide

Advanced Workflow Guide

Cache File Directory

Cache File Directory

The Integration Service creates the cache files by default in the $PMCacheDir directory. If the Integration Service process does not find the directory, it fails the session and writes a message to the session log indicating that it could not create or open the cache file.
The Integration Service may create multiple cache files. The number of cache files is limited by the amount of disk space available in the cache directory.
If you run the Integration Service on a grid and only some Integration Service nodes have fast access to the shared cache file directory, configure each session with a large cache to run on the nodes with fast access to the directory. To configure a session to run on a node with fast access to the directory, complete the following steps:
  1. Create a PowerCenter resource.
  2. Make the resource available to the nodes with fast access to the directory.
  3. Assign the resource to the session.
If all Integration Service processes in a grid have slow access to the cache files, set up a separate, local cache file directory for each Integration Service process. An Integration Service process may have faster access to the cache files if it runs on the same machine that contains the cache directory.


Updated November 14, 2019