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The AS_REF_AUDITS table in Oracle E-Business Suite (EBS) versions 12.1.1 and 12.2.2 is a critical repository for tracking audit-related data within the Application Object Library (AOL) framework. This table primarily stores reference audit information, which is essential for compliance, security monitoring, and change tracking across Oracle EBS modules. Below is a detailed analysis of its structure, purpose, and functional significance.

1. Purpose and Context

The AS_REF_AUDITS table is part of Oracle's auditing infrastructure, designed to log metadata changes and access events for reference entities such as lookup codes, value sets, and flexfields. It complements other audit tables (e.g., FND_AUDIT_SCHEMAS, FND_AUDIT_COLUMNS) by focusing on referential data modifications. This ensures traceability for regulatory compliance (e.g., SOX, GDPR) and internal governance.

2. Key Columns and Structure

The table typically includes the following columns:
  • AUDIT_ID: Primary key, uniquely identifying each audit record.
  • REFERENCE_TYPE: Specifies the type of reference entity audited (e.g., 'LOOKUP_CODE', 'VALUE_SET').
  • REFERENCE_KEY: Foreign key linking to the audited entity (e.g., lookup code ID).
  • OPERATION_TYPE: Indicates the action (INSERT, UPDATE, DELETE).
  • OLD_VALUE and NEW_VALUE: Capture before-and-after states of modified data.
  • CREATED_BY and CREATION_DATE: Track who performed the action and when.
  • MODULE_NAME: Identifies the EBS module (e.g., 'GL', 'AP') where the change originated.

3. Integration with Oracle EBS Modules

The table integrates with core EBS functionalities:
  • Flexfield Auditing: Tracks changes to key flexfields (KFF) and descriptive flexfields (DFF) definitions.
  • Lookup Code Management: Logs modifications to lookup values in FND_LOOKUP_VALUES.
  • Value Set Security: Monitors updates to value set configurations, critical for data validation.

4. Technical Implementation

Audit records are populated via:
  • Database Triggers: Automatically fire on DML operations against reference tables.
  • API Calls: Oracle's AOL APIs (e.g., FND_AUDIT_UTIL) programmatically insert records.
In EBS 12.2.2, the table may leverage Oracle RDBMS features like Fine-Grained Auditing (FGA) for enhanced performance.

5. Reporting and Compliance

Data from AS_REF_AUDITS feeds standard and custom reports:
  • Oracle Audit Vault: Consolidated for enterprise-wide monitoring.
  • OAM (Oracle Access Manager): Correlates with user access logs.
  • Custom SQL Queries: Used for ad-hoc compliance checks.

6. Version-Specific Considerations

  • 12.1.1: Relies on traditional auditing mechanisms with limited partitioning.
  • 12.2.2: May utilize Oracle Database 12c features like JSON-based logging for complex data types.

Conclusion

The AS_REF_AUDITS table is a cornerstone of Oracle EBS's auditing framework, ensuring accountability for reference data changes. Its design aligns with Oracle's security best practices, providing granular visibility into metadata modifications critical for maintaining system integrity in both 12.1.1 and 12.2.2 environments.