Table of Contents

Search

  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 Applications
  10. Interactive Data Preparation Service
  11. Enterprise Data Preparation Service
  12. Informatica Cluster Service
  13. Mass Ingestion Service
  14. Metadata Access Service
  15. Metadata Manager Service
  16. Model Repository Service
  17. PowerCenter Integration Service
  18. PowerCenter Integration Service Architecture
  19. High Availability for the PowerCenter Integration Service
  20. PowerCenter Repository Service
  21. PowerCenter Repository Management
  22. PowerExchange Listener Service
  23. PowerExchange Logger Service
  24. SAP BW Service
  25. Search Service
  26. System Services
  27. Test Data Manager Service
  28. Test Data Warehouse Service
  29. Web Services Hub
  30. Application Service Upgrade
  31. Appendix A: Application Service Databases
  32. Appendix B: Connecting to Databases from Windows
  33. Appendix C: Connecting to Databases
  34. Appendix D: 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.