Exchange Defrag

Posted on 2011-04-27
Last Modified: 2012-05-11

I've been having problems with a clients exchange database doubling in it's size. Originally the size was sitting at about 30-40gb, then one day it just exploded and doubled in size, and this is not due to mail in users mailboxes. With total user mailbox data the Exchange database should actually be between 30-40gb. We've tried defragging the database twice now, the first time we ran the defrag, the size cut about in half from 60gb to 30-35gb. About 3 weeks later the size doubled again to about 60-70gb. After running the defrag again, the size jumped to 90gb+! Can anyone elaborate or help here?
    LVL 10

    Expert Comment

    Do a database integrity check using isinteg tool after defrag.
    LVL 31

    Expert Comment

    Make sure that any file level AV is not set to scan the exchange directories / files (especially not EDB + STM + log + chk)

    Then check the application event log on the exchange server and make sure it is registering event ID 1221 every day for your databases.
    LVL 1

    Author Comment

    by:Leverage IT Consulting
    The DB is growing about 5MB every other second so soon I will run out of disk space. What could be causing this since the mailboxes are not increasing in size?
    LVL 31

    Expert Comment

    File level Anti Virus scanning things it us not supposed to like exchange log files can cause growth like that, so check your file level AV exclusions list.
    LVL 1

    Accepted Solution

    we found that one PC's Outlook profile got corrupt and was doing this, we rebuilt it and it's back to normal

    thank you
    LVL 17

    Expert Comment

    What version of Exchange is this?

    Generally issues to look into that can cause excessive log generation and database growth are;

    1. Data importation, i.e. have you done any imports lately

    2. Mailbox Moves and in some cases stuck/looping pending moves

    3. Automated mailings, i.e. if you have someone sending out large mail blast

    4. Spam

    5. 3rd party integration, i.e. if you are using a CRM system with an outlook plugin it can cause issues.  I know there was an issue with MS CRM Dynamics that caused this in the past

    6. Devices gone wild like BES servers but more recently there has been a rash of incidents regarding  iPhones etc

    If you want to see if the problem is coming from an internal Device/Machine you can use one of the following

    MS USER MONITOR: and here is a link on how to use it

    And of course this is a good one as well
    LVL 31

    Expert Comment

    Any update?

    Featured Post

    How your wiki can always stay up-to-date

    Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
    - Increase transparency
    - Onboard new hires faster
    - Access from mobile/offline

    Join & Write a Comment

    Get an idea of what you should include in an email disclaimer with these Top 5 email disclaimer tips.
    Set OWA language and time zone in Exchange for individuals, all users or per database.
    In this video we show how to create an Address List in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Organization >> Ad…
    To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

    755 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now