Search Results mtl_system_items




The DEEPSEEKAPPS.ENG_COPY_TABLE_ROWS_PKG package in Oracle E-Business Suite (EBS) versions 12.1.1 or 12.2.2 is a custom PL/SQL utility designed to facilitate the copying of data rows between tables, often used in engineering or manufacturing modules. A critical dependency of this package is its interaction with the MTL_SYSTEM_ITEMS table, which serves as the master repository for item definitions in Oracle Inventory. Below is a detailed analysis of this dependency:

1. Purpose of ENG_COPY_TABLE_ROWS_PKG

The package typically includes procedures to clone or replicate data, such as copying item attributes, BOM structures, or engineering changes. Its dependency on MTL_SYSTEM_ITEMS arises when handling item-related operations, as this table stores core item details like:
  • Item codes, descriptions, and revision controls
  • Inventory attributes (stockable, transactable, etc.)
  • Engineering and planning parameters

2. Key Dependencies on MTL_SYSTEM_ITEMS

The package likely references MTL_SYSTEM_ITEMS in the following scenarios:
  • Data Validation: Before copying item-related rows, the package may validate source/target items against MTL_SYSTEM_ITEMS to ensure they exist and are active.
  • Attribute Propagation: When copying item attributes (e.g., from a template item), the package reads or updates MTL_SYSTEM_ITEMS to maintain consistency.
  • Referential Integrity: The package may enforce constraints tied to MTL_SYSTEM_ITEMS.INVENTORY_ITEM_ID or ORGANIZATION_ID to prevent orphaned records.

3. Technical Integration Points

Specific procedures within ENG_COPY_TABLE_ROWS_PKG may:
  • Query MTL_SYSTEM_ITEMS via cursors or direct SQL to fetch item metadata.
  • Use MTL_SYSTEM_ITEMS as a source for INSERT/SELECT statements when replicating data to child tables (e.g., MTL_ITEM_CATEGORIES).
  • Invoke Oracle APIs (e.g., INV_ITEM_API) that internally reference MTL_SYSTEM_ITEMS.

4. Impact of MTL_SYSTEM_ITEMS Schema Changes

Modifications to MTL_SYSTEM_ITEMS (e.g., new columns, constraints) could break the package if:
  • Hard-coded SQL assumes a specific column structure.
  • Validation logic relies on deprecated fields.

5. Performance Considerations

Frequent access to MTL_SYSTEM_ITEMS—a high-volume table—may necessitate:
  • Indexed lookups on INVENTORY_ITEM_ID or SEGMENT1 (item code).
  • Bulk operations (e.g., FORALL) to minimize context switches.

6. Customization Risks

If ENG_COPY_TABLE_ROWS_PKG is modified, dependencies on MTL_SYSTEM_ITEMS must be carefully reviewed to avoid:
  • Circular logic (e.g., triggers on MTL_SYSTEM_ITEMS calling the package).
  • Lock contention during mass updates.

Conclusion

The DEEPSEEKAPPS.ENG_COPY_TABLE_ROWS_PKG package's reliance on MTL_SYSTEM_ITEMS underscores its role in item-centric data replication within Oracle EBS. Understanding this dependency is crucial for maintenance, performance tuning, and ensuring data integrity during cloning operations.