Search Results bom_components_b




The BOM_COMPONENTS_B table in Oracle E-Business Suite (EBS) versions 12.1.1 and 12.2.2 serves as a fundamental entity within the Bills of Material (BOM) module, storing critical component-level data for assembled items. This table is part of the core BOM schema and acts as the base table for component definitions, interfacing with transactional and reporting functionalities across manufacturing, inventory, and cost management modules. Below is a detailed technical breakdown of its structure, purpose, and integration within Oracle EBS.

Table Structure and Key Columns

The BOM_COMPONENTS_B table contains columns that define component attributes, relationships, and operational rules. Key columns include:
  • COMPONENT_SEQUENCE_ID: Primary key, uniquely identifying each component entry.
  • BILL_SEQUENCE_ID: Foreign key linking to BOM_BILL_OF_MATERIALS_B, associating components with their parent BOM.
  • ITEM_NUM: Displays the position of the component in the BOM structure.
  • COMPONENT_ITEM_ID: References MTL_SYSTEM_ITEMS_B, tying the component to an inventory item.
  • OPERATION_SEQ_NUM: Associates the component with a specific operation in a routing (if applicable).
  • EFFECTIVITY_DATE and DISABLE_DATE: Define the active period for the component.
  • COMPONENT_QUANTITY: Specifies the quantity required per assembly unit.
  • COMPONENT_YIELD_FACTOR: Adjusts quantities for expected yield losses.
  • SUPPLY_TYPE: Determines replenishment methods (e.g., "Phantom," "Assembly Pull").

Functional Role in Oracle EBS

The table underpins several critical processes:
  • BOM Explosion: Drives multi-level BOM expansions for MRP, costing, and work order generation.
  • Cost Rollup: Provides component details for calculating cumulative item costs.
  • Engineering Changes: Tracks revisions through effectivity dates, enabling phased component substitutions.
  • Supply Chain Planning: SUPPLY_TYPE influences procurement and production scheduling logic.

Integration with Other Modules

BOM_COMPONENTS_B integrates with:
  • Inventory (MTL_SYSTEM_ITEMS_B): Validates component items and their attributes.
  • Work in Process (WIP_COMPONENTS): Supplies component data for job scheduling and material issuance.
  • Cost Management (CST_ITEM_COSTS): Feeds component quantities into cost calculations.
  • Engineering (ENG_REVISED_ITEMS): Supports engineering change orders (ECOs) via revision-controlled columns.

Technical Considerations

  • Indexing: Key indexes on BILL_SEQUENCE_ID and COMPONENT_ITEM_ID optimize BOM explosion performance.
  • API Interactions: The table is primarily updated via Oracle's BOM APIs (e.g., BOM_COMPONENT_PUB) to enforce business rules.
  • Audit Trail: Changes may be logged in BOM_COMPONENTS_B for compliance, though detailed history often resides in audit-specific tables.

Customization and Extensions

Organizations often extend the table's functionality through:
  • Descriptive Flexfields (DFFs): Adding custom attributes like supplier-specific component notes.
  • Triggers: Enforcing validations (e.g., disallowing certain components in specific BOM types).
  • Views: Creating composite views for reporting, often joining with BOM_COMPONENTS_TL for translated descriptions.
In summary, BOM_COMPONENTS_B is a cornerstone of Oracle EBS's BOM functionality, enabling precise material structuring, cost management, and manufacturing execution. Its design reflects Oracle's modular architecture, balancing flexibility with rigorous data integrity to support complex production environments.