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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

Rules and Guidelines for Oracle External Loaders

Rules and Guidelines for Oracle External Loaders

Use the following rules and guidelines when you use external loaders to load to Oracle:
  • If you select an Oracle external loader, the default external loader executable name is sqlload. This is accurate for most UNIX platforms, but if you use Windows, check the Oracle documentation to find the name of the external loader executable.
  • For a connection that uses Oracle OS Authentication, enter the PmNullUser user name and PmNullPasswd when you create the external loader connection. PowerCenter uses Oracle OS Authentication when the connection user name is PmNullUser and the connection is to an Oracle database.
  • The target flat file for an Oracle external loader can be fixed-width or delimited.
  • For optimal performance when writing to a partitioned target, select Direct Path. For more information, see the Oracle documentation.
  • If you configure a session to write subsecond data to a Timestamp column in an Oracle 10.x or Oracle 11.x target, the Integration Service writes subsecond data up to microseconds by default. To ensure greater precision, edit the control file and change the Timestamp precision. For example, specify TIMESTAMP(9) to process nanoseconds.
  • For optimal performance, use the following guidelines to determine settings for partitioned and non-partitioned targets:
    Target
    Load Method
    Parallel Load
    Load Mode
    Partitioned
    Direct Path
    enable
    Append
    Partitioned
    Conventional Path
    enable
    n/a
    Non-partitioned
    n/a
    disable*
    n/a
    * If you disable parallel load, you must choose round-robin partitioning to route data to a single target file.


Updated June 03, 2019