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Mount Exchange 2013 DB with no logs

Posted on 2014-02-26
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Last Modified: 2014-04-07
I had to back / restore my exchange 2013 for some hardware changes.  It was a clean shutdown so I didn't backup the huge log directory.

Now when I power up, I can't get the DB to mount - keeps looking for the logs.  I'm trying with the command:

Mount-Database -Identity ExchangeServer1.Contoso.com\MyDatabase

But when I change to my server name and my database name - I get and error that I did not enter the correct Identity.

How do I find out exactly what to put in here?  (then I can add the force command to start the DB?)
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Question by:erikwhiteway
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by:erikwhiteway
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I droped the server name and the command will run - but still will not mount without the logs files - how do I get it to forget them and just start?
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by:Jamie McKillop
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How did you perform the backup. When you say it was a "clean shutdown". Do you mean you dismounted the database then took a file level backup?

-JJ
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by:Simon Butler (Sembee)
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The logs are part of the database.
You should have done an Exchange aware backup which would have flushed the logs.
As it is, you now have a broken database.

You will have to run a repair on the database using eseutil. Once the database has been repaired you should be able to mount it. However a repaired database should not stay in production, so once it is mounted I would create a new database, move all mailboxes to the new database and then drop the original.

Simon.
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by:erikwhiteway
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It was a Hyper-V copy - but I had the logs on a separate drive - I didn't copy that drive.  So it's not so much a backup as the log drive was just lost.

eseutil confirms the DB is in a clean shutdown.

What do I need to do to just generate new log files?
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by:Jamie McKillop
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You are going to have to run Eseutil /P <path to EDB> to repair the database. As Simon stated, you will then need to create a new database and move all your mailboxes.

-JJ
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Author Comment

by:erikwhiteway
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That seems odd that you can't just create new log files - the DB is 100%.  I remember creating new logs on the old version of exchange.

I'll run the util - but it will also take a long time.
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by:Jamie McKillop
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You can't "create logs" on Exchange. Never been possible. The database needs the logs to mount. If you don't have the logs, you need to run a repair.

-JJ
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Author Comment

by:erikwhiteway
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I ran eseutil /p and if finished with non errors and I still can't mount.

still get can't enumerate log files error
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Expert Comment

by:Jamie McKillop
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When you restored your server, did you recreate the log drive and path? If not, you need to do that, otherwise, Exchange will be looking for the log files in a path that doesn't exist.

-JJ
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Accepted Solution

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erikwhiteway earned 0 total points
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I had a typo in the path I manually created to remake the log files.

Once I had the path created properly  - simple 'mount-database -force' worked.
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Author Closing Comment

by:erikwhiteway
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file path issue  - not need to scan DB
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