That explain it, most of my environments are AWR only these days... :) Kellyn Pedersen Multi-Platform Database Administrator http://www.linkedin.com/in/kellynpedersen www.dbakevlar.com ________________________________ From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx> To: Kellyn Pedersen <kjped1313@xxxxxxxxx>; "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx> Sent: Thu, January 13, 2011 3:48:08 PM Subject: RE: awr history Yes, I’m not even sure why it happens but I have noticed it pretty frequently in the past. I just did some googling and found a potential explanation and solution here: http://www.rhinocerus.net/forum/databases-oracle-server/281468-how-snapshot-ids-generated-statspack.html Note that this is for statspack, not AWR – not sure if AWR has the same issue – I don’t remember if I’ve seen skipped numbers in AWR or only in Statspack. From:Kellyn Pedersen [mailto:kjped1313@xxxxxxxxx] Skipping numbers in the snap_id's? I'm trying to remember if I've actually seen that, (and I may have and just was oblivious to it!) Something to look into... ________________________________ 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.