i have done some search and maybe i have a problem with commit reaining but it still strange !
just to be sure about my test : 1) if i do select count(1) from mon$transactions after the end of my program and it returns 0, is what I can tell that there is no running transaction ? 3) i confirm that the same program don't have this problem with the 2.5.3 on windows super server but i don't find anything on bug fixes in release note. thanks in advance