Re: A problem with rapid growth of the transaction log

From: Lanwench [MVP - Exchange] (lanwench_at_heybuddy.donotsendme.unsolicitedmail.atyahoo.com)
Date: 03/12/04 

Date: Fri, 12 Mar 2004 11:13:45 -0500

Do you have any file-level antivirus software that might be scanning the M
drive or any of the Exchange folders (it shouldn't be...)

Goran Kimovski wrote:
> Hello folks,
>
> My company produces a service that connects to an Exchange Server
> using CDO to collect users from a selected address list and
> appointments from a 7 day period for the user's mailboxes. The
> service has been working fine on more than 30 customer sites, both
> connecting to Exchange 5.5 and Exchange 2000 without any problems.
> However, now we have a customer that runs 12 Exchange Servers in a
> network, where one central server is replicating the address lists
> from all local servers, but the user's mailboxes are not replicated
> to it. It's been reported to us that when our service runs the
> synchronisation cycle, i.e. reads the appointments from the mailboxes
> (around 250 in total), the transaction log increases rapidly.
>
> I know that by performing regular online backups the log files from
> the MDBDATA folder get purged and all that stuff, but the question is
> not how to workaround the problem, but rather why reading
> appointments causes the transaction log to increase?
>
> We're suspecting that the fact that the mailboxes are found on the
> local servers, but we're accessing them through the central server is
> making Exchange to do some temporal replication of the mailbox our
> service is opening, which is seen as a transaction and placed in the
> log.
>
> I would like to hear if anyone can confirm our suspicion and have any
> suggestions?
>
> Btw, we have a customer with 6 Exchange Servers and 600 maiboxes
> where we again connect to a central server, but they replicate the
> mailboxes to the central server too and we do not see this problem
> there ...
>
> /Kima
>
> Goran Kimovski
> Chief Technical Officer
> Seavus Group
>
> www.seavus.com
>
> "Turning your visions into technical solutions and products."

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