Not sure what do you exactly mean by UPLOAD? I guess you want to create Job orders in Oracle R12. There are 3 options for the same;
1. You can release the Jobs through MRP/ASCP, by releasing planned orders for make type of items.
2. You can create manual WIP Jobs, through WIP responsiblity>>Discrete Jobs>>New.
3. You can interface the WIP jobs from other legacy systems, through interface tables.
Please rate this, if you have satisfied with above answer.
Currently we are working in 11i now moving to R12, so i need move all open jobs work orders from 11i to R12, so please is there any script to achieve this, please share