There are a number of things that can occur where the
Exchange Server forces the next backup to be a FULL backup.
The Exchange Server has determined that a database structure
change has occurred that was not logged in the transaction log
or that can not be replayed just by using the transactions
in the transaction log. Therefore, the Exchange Server
will cause any attempt of an incremental or differential
backup to fail, since those backup types only back up
the transaction logs. You can look for hints on what caused
this by looking in the Event Log for anything related to
the Exchange server after the last successful
incremental or differential backup.

Thanks,

Del

----------------------------------------------------

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 02/01/2008
06:39:42 AM:

> Hi Guys
>
> It's not my week for databases sadly. Today I had a failed incr
> Exchange backup and found the following on the IBM site. As such, I
> am now running a full backup which is working fine. But, I'm still
> not understanding exactly why this is happening.
>
> Can anyone enlighten me?
>
> This was the error and explanation I found for it.
>
>
>
> Exchange backup is failing with HRESULT: 0xc8000230
>  Technote (FAQ)
>
> Problem
> Incremental backup fails after a failover. In the schedule log :
>
> ANS1909E The scheduled command failed.
> ANS1512E Scheduled event 'EXCHANGE_MON_DB_INCR' failed. Return code =
402
>
> Solution
> Customer installed Exchange in a Cluster environment. A full backup
> has been successful. Later, a failover occurred. The next
> incremental backup fails. In the exchange log, we have the following :
> .
> Backup of storage group First Storage Group (EXCHGROUP) failed.
> ACN5798E MS Exchange API HRESEBACKUPSETUP() failed with HRESULT:
> 0xc8000230
> .
> The database missed a previous full backup before the incremental
> backup.
> .
> The TDP connects to the Exchange API, and ask the Exchange server
> to run an incremental backup. In this case, the Exchange server
> is refusing :
> .
> MS Exchange API HRESEBACKUPSETUP() failed with HRESULT: 0xc8000230
> .
> The problem here is database defragmentation that causes the failure
> of the incremental, for this reason a FULL backup needs to be done
> after a degragmentation on exchange.
>