Table of Contents

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

Cache Files

Cache Files

The DTM creates at least one cache file for each Aggregator, Joiner, Lookup, Rank, and Sorter transformation included in a mapping, profile, SQL data service, or web service operation mapping.
If the DTM cannot process a transformation in memory, it writes the overflow values to cache files. When the job completes, the DTM releases cache memory and usually deletes the cache files.
By default, the DTM stores cache files for Aggregator, Joiner, Lookup, and Rank transformations in the list of directories defined by the Cache Directory property for the Data Integration Service. The DTM creates index and data cache files. It names the index file
PM*.idx
, and the data file
PM*.dat
.
The DTM stores the cache files for Sorter transformations in the list of directories defined by the Temporary Directories property for the Data Integration Service. The DTM creates one sorter cache file.