> in the example a TIB_Transaction object still exist and its
> property AutoCommit is set to True
>
> after setting AutoCommit = false in wich way i need to modify the code
> source ?
> where start and commit the transaction ?

It's always the same thing with transactions:

1) Start Transaction
2) Do whatever you want with it: select, insert, select again, insert some
more, delete, bla bla bla
3) After that: commit or rollback

> in everyway i think even after this modify
> is it impossible cause the deadlock in the manner explained

Sorry, I miss diss discussion. :-)

Artur