Database transactions with PEAR DB

Hello, I have written a PHP application that may be used with either Oracle or MySQL. There is one section of it that would probably benefit from being within a database transaction. Although I've been able to find methods like autoCommit, rollback and commit, I can't seem to find the relevant function to actually start the transaction and finish it off, at least where Oracle is involved. Would it suffice to just set autocommit to false, issue my queries and commit/rollback when I'm done? Can someone shed some light on this? I've read about alternate DB classes I could use, but I would prefer to stick with the PEAR DB class since it's already been used exclusively for the project. Thanks, -f -- Derek Fong Web Application Developer subtitle designs inc. <http://www.subtitled.com/> "Mistakes are the portals of discovery." --James Joyce >> GPG key/fingerprint available upon request <<