This is a market research Request for Information (RFI) from Marine Corps Systems Command for capability support and decommissioning of the Global Combat Support System Marine Corps (GCSS-MC), an Oracle-based ERP system. The scope is strictly limited to supporting the current system and its decommissioning, with no enhancements or modernization efforts considered. The system supports over 25,000 users worldwide for logistics, supply, and maintenance operations. No specific timelines, budget amounts, or performance location are mentioned in the description.