> I have two querys (master-detail) that are attached to one
> transaction component. If I not use COMMIT or ROLLBACk everything
> saves to the database, but if I make an explicit use of the
> transaction, (i.e. I insert a master record, then a detail record
> and post the changes only in the master -not in the detail- and call
> commit) I obtain a "fail to save changes to all the datasets".

> What can I do to avoid this message?

This really sounds like something must be wrongly configured. An
explicit commit/rollback should result in IBO attempting to post all
outstanding datasets and then performing the commit or rollback.

If you cannot identify the problem in your app, please try to
reproduce the problem in a sample application (preferably based on the
the Contact.GDB (comes with IBO's contact sample app) or the
employee.gdb (comes with delphi or IB) database. Then email the demo
app to me privately geoff@...
- since I think Jason could be busy for a few days :-)

--
Geoff Worboys
Telesis Computing