Luiz,

> I am sure. You need differents users logged on database in order to
> dmlcalching works to all them. You need also a tib_synccursor dropped in
> your app.

you are referring to the Global DML Caching mechanism.

You do not need different users if you would like to
have DML Caching within the scope of a transaction or
within the entire scope of one application instance.

Thomas.