Thanks for replying.

Possibly. I'll recheck, but all they're doing is inserting, no selecting, editing or deletion.

We're currently testing v3.02.  v1.56 has served us extremely well.

On Fri, Dec 15, 2017 at 10:04 AM, Рустам Муса-Ахунов rustam-m@... [firebird-support] <firebird-support@yahoogroups. com> wrote:

 

How can I receive this error when inserting a new row and prior to committing?

May be, 2-nd query starts another transaction (in an unobvious way), while 1-st transaction still active.

Why do you not upgrade your Firebird and DB to 2.5 version?