SAN DIEGO – Symitar has signed a couple major Oklahoma credit unions, including the state's largest, to its Episys core processing platform and enterprise-wide automation solutions, the Jack Henry & Associates subsidiary said. Oklahoma City-based Tinker Federal Credit Union and Bartlesville's 66 Federal Credit Union ($361 million) both currently are clients of AFTECH, a Fiserv unit, according to the 2004 Credit Union Technology Survey from Callahan & Associates. $1.3 billion Tinker FCU will also be using a package of Symitar-integrated solutions from Wescom Resources Group, the Wescom Credit Union tech CUSO, including electronic alerts, automated lending and Internet banking, the CU said. The Episys client list has grown by more than 60% over the past five years, Symitar officials said. More credit unions with assets exceeding $25 million use the Episys core processing solution than any other system, the company said.