Maybe try creating a stored outline for the query under the Apr CPU and then try to use the same outline to force good execution with the Oct CPU, or just try to manually apply some/all of the hints from the outline. 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. -- //www.freelists.org/webpage/oracle-l