I need to back date inventory snap shot. Reason during our monthly inventory the system is still being updated. Inventory is on 31st may system is still being updated on receiving and backflush. Expected to complete on 2nd June. Need to freeze and run snapshot for 31st may on 2nd of June. I can do this in Sap/r3 but the function is not allowed in oracle 11i

A snapshot is an extract of the data at a specific point in time. Oracle is just a database. Depending on your database structure a query may be able to pinpoint the inventory at a specific time.