Thanks Dragan, Thanks Hilmar
I think I found the problem, the problem is that I INDEXed the view every time the user Click on one button. I put the INDEX in Init method & now (I don't know how long :o)))) there is no problem.
I am wondering why such an error apears now, not a few months ago? I am not changed the code in that form from may be an Year.
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.
