> I ' ve forget to mention it.
> This exception happen with a Prepared select-Statement.
> (when i call prepareStatement) When i do selects i normally does
> not do anything with commit or autocommit. So why does this happen ?

This might be also a bug in driver. I would appreciate if you create
a test case that reproduces the bug. ensureInTransaction() method
simply checks if you have transaction started, and if not, starts it.
JDBC specification does not define Connection.begin() to start
transaction, but IB API does.

Best regards,
Roman Rokytskyy