I have an application I'm developing with PHP & Firebird. While it mostly works fine - I've been having what I believe to be transaction issues.
One problem was visibility - committed changes were not visible to selects. I know they were committed - after executing the commit within the scripts, I could see the changes within FlameRobin. Yet the script didn't see them.
I also saw the "oldest active transaction" getting old...and it didn't seem to update until I killed some of the longer-running php processes.
I use explicit transactions for every insert or update followed by explicit commits. Could my problem be that I need to use explicit transactions for the selects as well?