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

Data Object Caching

Data Object Caching

The Data Integration Service uses data object caching to access pre-built logical data objects and virtual tables. Enable data object caching to increase performance for mappings, SQL data service queries, and web service requests that include logical data objects and virtual tables.
By default, the Data Integration Service extracts source data and builds required data objects when it runs a mapping, SQL data service query, or a web service request. When you enable data object caching, the Data Integration Service can use cached logical data objects and virtual tables.
Perform the following steps to configure data object caching for logical data objects and virtual tables in an application:
  1. Configure the data object cache database connection in the cache properties for the Data Integration Service.
  2. Enable caching in the properties of logical data objects or virtual tables in an application.
By default, the Data Object Cache Manager component of the Data Integration Service manages the cache tables for logical data objects and virtual tables in the data object cache database. When the Data Object Cache Manager manages the cache, it inserts all data into the cache tables with each refresh. If you want to incrementally update the cache tables, you can choose to manage the cache tables yourself using a database client or other external tool. After enabling data object caching, you can configure a logical data object or virtual table to use a user-managed cache table.
To use the Timestamp with Time Zone data type and to enable data object caching for IBM DB2 or for Microsoft SQL Server, set the date time format of the deployed mapping to the "YYYY-MM-DD HH24:MI:SS" format. The Data Integration Service writes the data up to seconds.