Well, I've only done one, but I'll reply anyway. I used exp/imp primarily because I was migrating from HPUX to AIX at the same time, but I probably would've used exp/imp anyway since I needed to move from DMTs to LMTs and it also gives you a cleaner data dictionary. I've seen a few bugs with upgraded data so I'd like to avoid those. Regards, Brandon Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.