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The POS_VENDOR_UPG_TMP table in Oracle E-Business Suite (EBS) versions 12.1.1 and 12.2.2 serves as a temporary staging table primarily used during the upgrade or migration of supplier data in the Procurement (iProcurement) and Purchasing modules. This table is part of the Oracle iSupplier Portal (iSP) or Procurement functions, where vendor-related data transformations occur before being committed to permanent base tables. Below is a detailed analysis of its purpose, structure, and operational context within Oracle EBS.

Purpose and Functional Context

The POS_VENDOR_UPG_TMP table acts as an intermediary repository during vendor data upgrades, particularly when migrating legacy supplier information to newer versions of Oracle EBS. It temporarily holds vendor records extracted from legacy systems or older EBS instances before validation, cleansing, and eventual insertion into production tables such as PO_VENDORS, AP_SUPPLIERS, or HZ_PARTIES. This ensures data integrity by allowing pre-processing (e.g., deduplication, standardization) without directly modifying live data.

Table Structure and Key Columns

While the exact schema may vary slightly between EBS 12.1.1 and 12.2.2, the table typically includes the following columns:
  • VENDOR_ID: Temporary identifier for the vendor record during migration.
  • VENDOR_NAME: Supplier name as extracted from the source system.
  • LEGACY_VENDOR_CODE: Original vendor code from the legacy system.
  • ADDRESS_LINES: Temporary storage for supplier address details.
  • STATUS: Indicates processing state (e.g., 'PENDING', 'PROCESSED', 'ERROR').
  • ERROR_MESSAGE: Captures validation errors during data transformation.
  • CREATION_DATE and LAST_UPDATE_DATE: Audit columns for tracking record lifecycle.

Data Flow and Integration

The table integrates with Oracle's upgrade utilities and PL/SQL APIs (e.g., POS_VENDOR_UPG_PKG) to facilitate batch processing. The typical workflow involves:
  1. Extraction: Legacy vendor data is loaded into POS_VENDOR_UPG_TMP via SQL*Loader or custom scripts.
  2. Validation: Data is validated against EBS business rules (e.g., tax IDs, address formats).
  3. Transformation: Mapped to conform to EBS schema requirements (e.g., splitting concatenated fields).
  4. Migration: Approved records are transferred to permanent tables, while rejected entries remain flagged for correction.

Technical Considerations

  • Indexing: Often indexed on VENDOR_ID and STATUS to optimize batch processing performance.
  • Partitioning: In large-scale upgrades, partitioning by STATUS may improve parallel processing efficiency.
  • Cleanup: Post-migration, the table should be purged to free space, though some implementations retain it for rollback capability.

Version-Specific Notes

  • EBS 12.2.2: Enhanced to support REST APIs for hybrid cloud upgrades, with additional columns for tracking asynchronous job IDs.
  • EBS 12.1.1: Relies more heavily on concurrent programs (e.g., "Load Vendor Data") for batch operations.

Best Practices

  • Implement pre-upgrade scripts to truncate the table if reused across migrations.
  • Log errors comprehensively in ERROR_MESSAGE to simplify troubleshooting.
  • Schedule upgrades during low-activity periods to minimize contention with live transactions.
In summary, POS_VENDOR_UPG_TMP is a critical component in Oracle EBS upgrades, enabling controlled, auditable vendor data transitions while mitigating risks to production environments.