How about a logon trigger that checks the database name and if it's the production database, automatically terminates their session? ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Taft, David This means that in order to give a user access to the standby for ad-hoc reporting, they must first be added to the primary. That night their UserIDs get applied to the standby. At that point they are on their honor not to run ad-hocs against the primary. 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.