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The IGS_PS_RSV_TEMP table in Oracle E-Business Suite (EBS) versions 12.1.1 and 12.2.2 is a critical component of the Oracle Student System (OSS), specifically within the Program and Curriculum Management module. This table serves as a temporary repository for reservation-related data, facilitating the management of student course reservations, seat allocations, and enrollment planning. Below is a detailed analysis of its structure, purpose, and integration within Oracle EBS.

1. Table Overview

IGS_PS_RSV_TEMP is a transactional table designed to temporarily store reservation records before they are processed or moved to permanent tables. It acts as an intermediary during batch operations, ensuring data integrity and reducing contention on primary reservation tables. The table is typically populated during enrollment periods, when students reserve seats in courses, and is purged after successful processing.

2. Key Columns and Structure

The table includes columns such as:

• RSV_ID: A unique identifier for each reservation record.
• STUDENT_ID: References the student making the reservation.
• COURSE_OFFERING_ID: Links to the specific course or section.
• RESERVATION_DATE: Timestamp of the reservation.
• STATUS: Indicates whether the reservation is pending, confirmed, or expired.
• EXPIRY_DATE: Defines the validity period of the reservation.
• PROCESSED_FLAG: Marks whether the record has been moved to permanent storage.

3. Functional Role

The table supports:

• Batch Processing: Enables bulk operations for seat reservations, reducing real-time system load.
• Error Handling: Temporarily holds records that fail validation, allowing for corrective actions.
• Audit Trail: Tracks reservation attempts before finalization, aiding in reconciliation.

4. Integration with Oracle EBS Modules

IGS_PS_RSV_TEMP interacts with:

• IGS_PS_RSV_MAIN: Permanent reservation table where processed records are transferred.
• IGS_EN_STDNT_PS_ATT: Ties reservations to student program enrollments.
• Concurrent Programs: Scheduled jobs (e.g., "Process Course Reservations") automate data migration from this table.

5. Technical Considerations

In EBS 12.2.2, the table benefits from Oracle's Online Patching (ADOP) framework, allowing maintenance without downtime. Indexes on STUDENT_ID and PROCESSED_FLAG optimize performance. Purge routines should be scheduled to prevent table bloating.

6. Customization and Extensions

Organizations may extend the table with custom columns (e.g., WAITLIST_PRIORITY) or triggers to enforce business rules. However, such modifications require careful testing to avoid conflicts with OSS standard workflows.

7. Conclusion

IGS_PS_RSV_TEMP is a foundational element in Oracle EBS's student reservation system, balancing performance and data integrity. Its design aligns with Oracle's best practices for temporary data handling, ensuring scalability during peak enrollment periods. Administrators should monitor its usage and leverage EBS's tools for optimal maintenance.