Transactions using iBase Driver (CI 3.0.4)

CI 2 doesn't have a firebird driver.

Not officially.   I'm using a library that I found on the net that works properlly for 6 years.  

I upgraded my CI installation and system just to have a 100% pure CI official instalation.

Can you help me ?   I think there is a bug on the iBase driver.

I could take a look at what you claim is working properly and see what the difference between it and CI3's ibase driver is, but I have no way of testing. I'm afraid that as you are the extremely rare case of someone using Firebird, you are the only one who can help.

But CI3 just proxies calls to ibase_trans() and ibase_commit(), ibase_rollback() - the code is dead simple, so the possibility of a bug is highly unlikely.