Exchange 2013 Background Database Maintenance is not happening for some DBs. Unable to find event id 732, 737 on the mailbox servers

Hello MS team,


I have a client who is running into some weird issues. For some reason, we are unable to reclaim disk space for some of the exchange databases, even if we move bulk mailboxes to a new db, and so on.


The problem is that today we realize that the Exchange 2013 background database maintenance is not working for some of these DBs. I was unable to locate a event IDs 732, 737, for these DBs on every single mailbox server that is part of a DAG

How can I fix the issue of the db background database maintenance is not happening?

How can I reclaim disk space on the DBs without performing a offline defrag or creating a new DB, then bulk migration of mailboxes?

I also noticed that the backups for these DBs failed last week, however the exchange background maintenance is been failing for a while.

Can you explain the reasons on why the exchange background maintenance is not working? action plan, gotchas


Exchange environment below



Site 1:



3 MBX servers in a DAG1



2 CAS behind F5



2 Edge servers



2 DLP servers





Site 2



same as above



All of Exchange are 2013 SP1, and they are VMs. Windows 2012 R2 is the OS for all these VMs
ExchangeBackgroundMaintenance.jpg
Jerry SeinfieldAsked:
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Jerry SeinfieldAuthor Commented:
As additional information, some of these DBs the size is greater than 2 TB, others not

As far as I can tell you, Each DBs resides on different mountpoints
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Will SzymkowskiSenior Solution ArchitectCommented:
I have not seen something like this before with Exchange 2013. However based on the version you are running SP1 i would recommend going to CU8 if possibly. You could also spin up another Exchange CU8 server and move some databases to it and see if you get the same results.

Will.
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Jerry SeinfieldAuthor Commented:
thanks Will,

Do you know if this issue is fixed with CU 8? is so, can you please posted the article that states of this fix?
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Will SzymkowskiSenior Solution ArchitectCommented:
As stated I have not seen a similar issue to this, however SP1 is fairly old. It may not have been resolved in CU8 specifically but possibly from a later CU then SP1.

Will.
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Jerry SeinfieldAuthor Commented:
Will, I am not following you

My Exchange 2013 vms are running Exchange 2013 SP1, which essentially means, they are on CU4, as per link below

https://technet.microsoft.com/en-us/library/hh135098(v=exchg.150).aspx

Any suggestions?
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pcmghouseCommented:
can you run this command to see the whitespace created in the DBs.
get-mailboxdatabase dbname -status|fl databasesize,name,availablenewmailboxspace

Exchange 2013 reuses the whitespace whenever there is any new data onto that database.
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