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The MRP_I2_BOM_TEMP table in Oracle E-Business Suite (EBS) 12.1.1 or 12.2.2 is a temporary staging table used by the MRP (Material Requirements Planning) module to store bill of materials (BOM) data during the execution of MRP processes. This table plays a critical role in the MRP engine's ability to efficiently process and analyze BOM structures, ensuring accurate material planning and procurement recommendations. Below is a detailed summary of its purpose, structure, and functionality within Oracle EBS.

Purpose and Context

The MRP_I2_BOM_TEMP table is part of Oracle's MRP engine infrastructure, specifically designed to handle intermediate BOM data during MRP runs. It serves as a temporary repository where BOM explosions are staged before being processed further. This table is particularly useful in scenarios where large BOM hierarchies need to be decomposed and analyzed for material requirements, lead times, and sourcing decisions. By leveraging this temporary table, Oracle EBS optimizes memory usage and processing efficiency during complex MRP calculations.

Key Attributes and Structure

The table typically includes columns that capture essential BOM-related information, such as:
  • PLANNER_CODE: Identifies the planner responsible for the item.
  • ORGANIZATION_ID: Specifies the inventory organization associated with the BOM.
  • ASSEMBLY_ITEM_ID: References the top-level assembly item in the BOM structure.
  • COMPONENT_ITEM_ID: Identifies the component items within the BOM.
  • OPERATION_SEQ_NUM: Indicates the sequence of operations in the manufacturing process.
  • USAGE_QUANTITY: Stores the quantity of the component required per assembly.
  • EFFECTIVITY_DATE: Defines the date range during which the BOM component is valid.
  • DISABLE_DATE: Marks when a component is no longer active in the BOM.
Additional columns may include flags for processing status, batch identifiers, and timestamps to track when records were inserted or updated.

Role in MRP Processing

During an MRP run, the MRP_I2_BOM_TEMP table is populated with BOM data extracted from the primary BOM tables (e.g., BOM_BILL_OF_MATERIALS, BOM_INVENTORY_COMPONENTS). The MRP engine uses this temporary data to:
  1. Perform BOM explosions to determine component requirements.
  2. Calculate net material requirements based on demand and supply.
  3. Apply lead time offsets and lot-sizing rules.
  4. Generate planned orders, purchase requisitions, or work orders.
Once the MRP run is complete, the data in this table is typically purged or archived, depending on the system configuration.

Integration with Other Modules

The MRP_I2_BOM_TEMP table interacts closely with other Oracle EBS modules, including:
  • Inventory Management: Validates item availability and organization hierarchies.
  • Purchasing: Influences procurement recommendations for BOM components.
  • Work in Process (WIP): Supports manufacturing scheduling and component allocation.

Performance Considerations

Given its temporary nature, this table is optimized for high-volume data processing. However, improper maintenance (e.g., failure to purge stale data) can lead to performance degradation. Oracle recommends periodic cleanup of temporary tables to ensure optimal MRP performance.

Conclusion

The MRP_I2_BOM_TEMP table is a vital component of Oracle EBS's MRP architecture, enabling efficient BOM processing and material planning. Its structured design ensures accurate demand propagation and seamless integration with other supply chain modules, making it indispensable for organizations relying on Oracle EBS for complex manufacturing and procurement operations.