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The AHL_MR_INTERFACES table in Oracle E-Business Suite (EBS) 12.1.1 and 12.2.2 is a critical data structure within the Oracle Advanced Service Online (ASO) module, specifically designed to support Maintenance, Repair, and Overhaul (MRO) operations. This table serves as a repository for storing interval-based maintenance requirements, which are essential for defining service schedules, warranty tracking, and compliance with regulatory standards. Below is a detailed analysis of its structure, purpose, and integration within Oracle EBS.

1. Table Overview

The AHL_MR_INTERVACES table stores interval definitions associated with Maintenance Requirements (MR) in Oracle's Service and Maintenance modules. Intervals define the frequency or conditions under which maintenance tasks must be performed, such as time-based (e.g., every 6 months) or usage-based (e.g., every 10,000 miles). Key attributes include:
  • MR_INTERVAL_ID: Primary key, uniquely identifying each interval record.
  • MR_HEADER_ID: Foreign key linking to AHL_MR_HEADERS, associating intervals with specific maintenance requirements.
  • INTERVAL_TYPE_CODE: Categorizes intervals (e.g., 'TIME', 'USAGE', 'EVENT').
  • VALUE: Numeric value defining the interval magnitude (e.g., 6 for 6 months).
  • UOM_CODE: Unit of measure (e.g., 'MONTHS', 'HOURS').
  • START_DATE_ACTIVE and END_DATE_ACTIVE: Validity period for the interval.

2. Functional Role

This table enables organizations to:
  • Define Maintenance Schedules: Intervals dictate when maintenance tasks are triggered, ensuring compliance with OEM guidelines or regulatory mandates.
  • Support Complex Rules: Multiple intervals can be linked to a single MR, allowing for compound conditions (e.g., "Every 12 months or 5,000 miles, whichever comes first").
  • Facilitate Warranty Tracking: Intervals help validate whether service was performed within required thresholds, impacting warranty claims.

3. Integration with Oracle EBS Modules

The table integrates with several EBS components:
  • Oracle Service Contracts: Intervals trigger service obligations under contract terms.
  • Oracle Depot Repair: Used to schedule repairs based on asset usage or time elapsed.
  • Oracle Enterprise Asset Management (eAM): Intervals feed into preventive maintenance workflows.

4. Key Dependencies

  • AHL_MR_HEADERS: Parent table containing MR definitions.
  • AHL_MR_ROUTES: Associates intervals with task sequences.
  • FND_LOOKUP_VALUES: Stores coded values for INTERVAL_TYPE_CODE and UOM_CODE.

5. Customization Considerations

While Oracle provides standard interval types, extensions may be needed for industry-specific requirements. Customizations should:
  • Leverage Oracle APIs (e.g., AHL_MR_INTERVALS_PKG) to ensure data integrity.
  • Adhere to Oracle's Multi-Org architecture for partitioned data.
  • Consider performance impacts when querying large interval datasets.

6. Data Security

Access to AHL_MR_INTERVALS is controlled via Oracle's Function Security, typically restricted to roles like "Service Administrator" or "Maintenance Planner."

7. Upgrade Implications

Between 12.1.1 and 12.2.2, the table structure remains largely consistent, but 12.2.2 introduces enhanced indexing and partitioning options for scalability. In summary, AHL_MR_INTERVALS is a foundational table for MRO operations in Oracle EBS, enabling precise maintenance scheduling and compliance management. Its design reflects Oracle's focus on configurability and integration across service-centric modules.