Hi Mahesh,
There is no standard data source. so you need go with generic data source based on tables/view or function module.
With help of source team you need to find base tables of Tx - CJI3(data will be stored at back end tables). once you got base tables then you can create generic data source at Tx - RSO2.
Am guess these are the tables which stores data of CJI3.
Table : TCNT and TKALV
Thanks