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The CST_ITEM_LIST_TEMP table in Oracle E-Business Suite (EBS) 12.1.1 or 12.2.2 is a temporary table utilized within the Cost Management module to facilitate batch processing of item-related operations, particularly during cost updates, inventory valuation, and cost rollup calculations. This table acts as a staging area, holding item data temporarily before it is processed by concurrent programs or other cost-related functions. Below is a detailed breakdown of its purpose, structure, and significance in Oracle EBS.

Purpose and Functionality

The primary purpose of CST_ITEM_LIST_TEMP is to store item identifiers (such as INVENTORY_ITEM_ID and ORGANIZATION_ID) temporarily during cost processing tasks. It is commonly used in scenarios like:
  • Cost Rollups: When recalculating item costs, the table holds items pending cost updates.
  • Inventory Valuation: It temporarily stores items for valuation reports or reconciliation processes.
  • Batch Cost Updates: Facilitates bulk updates by caching items before applying cost changes.
This table ensures efficiency by reducing runtime overhead, as it avoids repeated queries against transactional tables like MTL_SYSTEM_ITEMS_B or CST_ITEM_COSTS.

Table Structure

The CST_ITEM_LIST_TEMP table typically includes the following key columns:
  • REQUEST_ID: Links to the concurrent request ID initiating the batch process.
  • INVENTORY_ITEM_ID: Unique identifier for the item in the inventory.
  • ORGANIZATION_ID: Identifies the inventory organization associated with the item.
  • PROCESS_FLAG: Indicates the processing status (e.g., 'P' for pending, 'C' for complete).
  • CREATION_DATE, CREATED_BY: Audit columns tracking record creation.
Additional columns may exist depending on customizations or specific EBS versions.

Integration with Cost Management

The table is tightly integrated with Oracle Cost Management processes, such as:
  • Concurrent Programs: Used by programs like "Cost Update" or "Cost Rollup" to identify items requiring cost recalculations.
  • APIs: Cost-related APIs reference this table to fetch items for processing.
  • Purge Mechanisms: Data in this table is typically purged post-processing to maintain performance.

Technical Considerations

  • Performance: Indexes on REQUEST_ID, INVENTORY_ITEM_ID, and ORGANIZATION_ID optimize query performance during batch operations.
  • Concurrency: The table supports multi-user environments by segregating data via REQUEST_ID.
  • Temporary Nature: Unlike permanent tables, it stores transient data, reducing long-term storage overhead.

Customizations and Extensions

In some implementations, the table may be extended to include custom columns or triggers to support unique business requirements, such as:
  • Additional flags for workflow-driven cost updates.
  • Integration with third-party systems for cost synchronization.

Conclusion

The CST_ITEM_LIST_TEMP table is a critical component in Oracle EBS Cost Management, enabling efficient batch processing of item cost calculations. Its temporary structure ensures optimal performance during resource-intensive operations while maintaining data integrity. Understanding its role and structure is essential for troubleshooting cost-related processes or designing custom cost solutions in Oracle EBS 12.1.1 or 12.2.2.