OKE is an acronym for Oracle Project Contracts which is a tool for contract creation, execution, and management that links contracts and documents in Documentum. It provides benefits like consistent contract processes, real-time access to contract data, and enhanced reporting capabilities. The document discusses how OKE integrates with other Oracle systems like Project Accounting, Purchasing, and Payables to track changes to project budgets, commitments, forecasts, and actual costs through the contract, PO, invoicing, and change order processes.