Search Results bom_explosion_temp




The BOM_EXPLOSION_TEMP table in Oracle E-Business Suite (EBS) 12.1.1 and 12.2.2 is a critical temporary table used during the Bill of Materials (BOM) explosion process. It serves as a staging area for storing intermediate results when the system processes multi-level BOM structures for various applications, such as Work in Process (WIP), Costing, Planning, and Inventory. Below is a detailed technical summary of its purpose, structure, and usage within Oracle EBS.

Purpose and Functionality

The BOM_EXPLOSION_TEMP table is primarily utilized by the BOM explosion engine to store temporary data while recursively traversing hierarchical BOM structures. This process is essential for applications requiring a complete breakdown of assemblies into their constituent components, such as material requirements planning (MRP), cost roll-up calculations, and WIP component pick lists. The table acts as a transient repository, ensuring efficient memory management during complex BOM operations.

Table Structure

The table consists of columns that capture key attributes of exploded BOM components, including:
  • EXPLOSION_TYPE: Identifies the purpose of the explosion (e.g., "WIP" for Work in Process, "COST" for Costing).
  • SESSION_ID: A unique identifier for each explosion session, enabling parallel processing.
  • COMPONENT_ITEM_ID: Stores the inventory item ID of the component.
  • OPERATION_SEQ_NUM: Indicates the operation sequence in routing.
  • QUANTITY: The required quantity of the component per assembly.
  • LEVEL_NUM: Represents the hierarchical level of the component in the BOM tree.
  • EFFECTIVITY_DATE: Validates component usage based on date ranges.
Additional columns track sourcing details, yield factors, and substitution flags.

Usage in Key Processes

  1. Cost Roll-Up: The table stores component costs during cost roll-up calculations, enabling accurate product costing.
  2. MRP Explosion: Material Requirements Planning uses this table to determine dependent demand for components.
  3. WIP Component Allocation: Work orders reference the table to generate pick lists for assembly builds.
  4. Engineering Change Orders (ECOs): Temporary explosions validate BOM changes before implementation.

Performance Considerations

Since BOM_EXPLOSION_TEMP is heavily accessed during BOM processing, Oracle recommends:
  • Purging stale data using BOM_EXPLOSION_TEMP_PKG.CLEANUP to maintain performance.
  • Indexing critical columns like SESSION_ID and EXPLOSION_TYPE.
  • Monitoring session growth in high-concurrency environments.

Integration with Other Modules

The table interfaces with:
  • BOM_BILL_OF_MATERIALS: Sources BOM header data.
  • BOM_INVENTORY_COMPONENTS: Retrieves component details.
  • MTL_SYSTEM_ITEMS_B: Joins item master data for descriptions and attributes.

Conclusion

The BOM_EXPLOSION_TEMP table is a foundational element in Oracle EBS BOM processing, enabling scalable and efficient multi-level explosions. Its design supports complex manufacturing scenarios while ensuring data integrity through transactional isolation. Administrators should prioritize its maintenance to optimize system performance in production environments.