Oklahoma won 1 BCS National Title (2000).
2 bcs championships
The Alabama Crimson Tide have won 13 BCS National Championships.
NCAA don't officially recognize football championships. My Sooner have won 7 championships thru the AP Poll and UPI (coaches) and one BCS championship.
In the BCS era, Alabama has won two BCS National Championship Games; 2010 and 2012 with the two championships corresponding to the 2009 and 2011 seasons.
LSU has won 2 bsc national championships