Exchange 2007 SP3 The event log is full of warning messages regarding this event id and suggest to change to online maintenance schedule. I have like 10 DB configured and each scheduled for the same time. And all the schedule warning issues between 4:58 AM and 5:10 AM?

Please see below, it's best practice to stagger the maintenance start times for your DBs by at least 15 mins. You can run EXBPA as well before and after you change to see if it detects any overlap. Mailbox store online maintenance schedules overlap http://technet.microsoft.com/en-us/library/aa995795(EXCHG.80).aspx James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Hello, The event 9871 has not having any connection with scheduling online maintenance with other store. The 9871 is logged when the maintenance window is over for a database but a transaction is still being processed. This transaction must complete, we just won’t stop it because the schedule window has ended, and that is when the 9871 is thrown. The Event has been introduced Exchange 2007 SP1. We can extend the maintenance window to avoid the event id, but it just depends what we are doing when the schedule window ends, so we could still hit the 9871 event. Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

So you are saying no matter whatever the scheule windows is it completes it and backup the transaction logs? Shoud I avoid the event id. I have setup each job with the difference of 15 min each since there are 12 SG and 12 DB (each SG has one DB). So what would recommend now - to schedule the jobs back to 12:00-5:00 AM window again?

Hello, Yes, you can try it and see if the warning persists. Thanks, Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

Hello, Is there any update on this thread? Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

did not make any difference.