Chasing a big total of 188, Delhi batsmen completed their ninth victory in the tournament in 16.4 overs, maintaining their top position on the points table while Deccan were still on the bottom of the table.
Australian batsman Warner hit a brilliant century and Ojha a fine half-century after captain Virender Sehwag was gone for four.
Warner made 109 off just 54 balls and Ojha scored 64 off 46 balls and both remained not out.
Warner struck seven sixes and ten fours while Ojha hit five sixes and two boundaries.
Earlier, Deccan Chargers batted first after captain Kumar Sangakkara won the toss and made 187 for four in the allotted 20 overs.
Shikhar Dhawan top scored with 84 from just 49 balls with nine fours and five sixes, followed by Cameron White’s 65 in 40 balls with seven fours and two sixes.
Both batsmen made 126 runs for the third wicket partnership.
For Delhi, paceman Varun Aaron claimed two wickets for 30 runs
