Yes AWR does keep the explain plans - check dba_hist_sql_plan (or just look at it through the DB Console/Grid Control GUI), and yes it could've helped for last month, assuming you set your AWR retention appropriately. IIRC, it defaults to only 1 week, but I bumped mine up to 45 days specifically for the purpose of covering monthly queries. HTH, 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.