Thanks for Helping me @all! Now it Works fine. I've had an Program bug in our Internal createView Method.

wrong:
create view
use view
dbsetprop("Fetch....

right:
create view
dbsetprop("Fetch....
use view

Bud the wrong order works in my method since 3 Years with nearly no error. Now it works without an error! :-)

Thanks for Input @all!

Greetings from Germany