Does your maintenance window and backup window coincide? Maintenance stops when backup starts. And if a backup is running, maintenance won't begin.
And this all changes in Exchange 2013. (It may have changed in Exchange 2010 sp3, I can't remember. Too many releases going on right now.) From: [email protected] [mailto:[email protected]] On Behalf Of Binner, Lori A Sent: Friday, February 14, 2014 2:36 PM To: [email protected] Subject: [Exchange] Event ID Error: 629 Can anyone tell me if/whether this is something to be concerned with/acted upon? We did widen the maintenance time, but the error still persists. In Event Viewer each day: Event ID: 629 Source: ESE Level: Warning Description: Information Store (9788) EXDB7: Database 'F:\Mailbox\DB7\DB7.edb': While attempting to move to the next or previous node in a B-Tree, the database engine skipped over 41741 non-visible nodes in 127 pages. In addition, since this message was last reported 23 hours ago, 0 other incidents of excessive non-visible nodes were encountered (a total of 0 nodes in 0 pages were skipped) during navigation in this B-Tree. It is likely that these non-visible nodes are nodes which have been marked for deletion but which are yet to be purged. The database may benefit from widening the online maintenance window during off-peak hours in order to purge such nodes and reclaim their space. If this message persists, offline defragmentation may be run to remove all nodes which have been marked for deletion but have yet to be purged from the database. Thank you. This electronic communication may contain confidential information. If you, the reader of this electronic communication, are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this electronic communication, or any of its contents, is strictly prohibited. If you believe you have received this electronic communication in error, please notify the sender as soon as possible and delete the original version of this electronic communication, any of its contents (including attachments), and any copies of the foregoing from your computer system. Your assistance in correcting this error is appreciated.
