OASIS (Online Administrative Services Information System) supports the Countywide Human Resource and Financial Systems. These systems consist of Human Resources, Payroll, Benefits, General Ledger, Budgets, Fixed Assets, Accounts Receivable, Accounts Payable, Billing, Project Costing, Contracts/Grants, DBF (Deposit Based Fees), Purchasing, and Inventory The OASIS Information Technology staff provides production support and upgrades of these systems.  For more information, please visit: http://oasis.co.riverside.ca.us/ or call (951) 358-6200.