In addition, the San Diego Gulls acquired goaltender Jeff Glass from the Toronto Marlies for future considerations.
Cracknell has recorded three goals and seven assists for 10 points in 14 AHL games with Toronto this season.
The 13th-year pro has played 498 regular-season games in the AHL with Toronto, Laval, Hartford, Springfield, Chicago, Peoria, Quad City and Omaha, totaling 129 goals and 152 assists for 281 points.
Cracknell has also picked up 21 goals and 22 assists for 43 points in 208 regular-season NHL games skating for St. Louis, Columbus, Vancouver, Edmonton, Dallas and the N.Y. Rangers. He was originally a 2004 draft pick by Calgary.
Oleksy has notched two assists in 15 AHL games with San Diego this season.
In 388 AHL contests with San Diego, Toronto, Wilkes-Barre/Scranton, Hershey, Bridgeport and Lake Erie, Oleksy has recorded 20 goals and 89 assists for 109 points.
A 10th-year pro, Oleksy has appeared in 73 NHL games with Washington and Pittsburgh, registering three goals and 17 assists for 20 points.
Glass appeared in 10 AHL games for Toronto this season, posting a record of 3-4-1 with a 4.31 goals-against average and an .849 save percentage.
He has played 195 games in the AHL with Toronto, Rockford and Binghamton, with a record of 69-91-14, a 3.25 GAA, a .901 save percentage and five shutouts.
Glass made his NHL debut with Chicago in 2017-18, playing 15 games with the Blackhawks (3-7-3, 3.36, .898).