Cant mount exchange 2010 database after accidentally deleting log files

MapiExceptionJetErrorMissingLogFile: Unable to mount database. (hr=0x80004005, ec=-528)

run the below command and check the Database health
eseutil /mh "Location of .edb file"

- Rancy

I faced same issue sometime back. First what is the db size and drive size. You need almost double size drive space.

Is BIN folder located in different location and db is on different LUN, if so then you need to run like this.

Say you Bin file is in E drive and db is on f drive. Then you need to run like below:
CD "E:\Program Files\Microsoft\Exchange Server\V14\Bin"

F:

CD F:\YOURDBLUN\DB  

F:\YOURDBLUN\DB>e:eseutil /p DBNAME.edb

This version ran eseutil on the F: drive, making the temp database on the F: drive, where there is enough space to run it.

Let me know, if that works for you.

If the Logs required by the Database arent available nor can we retrieve using some 3rd party we might have to Repair the DB as a last resort or Restore from last good backup :(

Running the {eseutil /mh "Location of .edb file"} command will tell us the state and the logs required by the DB to come into clean shutdown to be able to mount it :)

- Rancy

@Rancy, you are right, however if drive doesn't have enough space to create temp db, repair won't work. That's why i posted the correct command.

Hi Rancy this is what i got:


Initiating FILE DUMP mode...
         Database: E:\Microsoft Exchange 2010 Mailbox\Mailbox\Mailbox Database 1575257781\Mailbox Database 1575257781.ed
b


DATABASE HEADER:
Checksum Information:
Expected Checksum: 0x0aeec48d
  Actual Checksum: 0x0aeec48d

Fields:
        File Type: Database
         Checksum: 0xaeec48d
   Format ulMagic: 0x89abcdef
   Engine ulMagic: 0x89abcdef
 Format ulVersion: 0x620,17
 Engine ulVersion: 0x620,17
Created ulVersion: 0x620,17
     DB Signature: Create time:06/28/2012 15:59:19 Rand:1346145 Computer:
         cbDbPage: 32768
           dbtime: 81911494 (0x4e1dec6)
            State: Clean Shutdown
     Log Required: 0-0 (0x0-0x0)
    Log Committed: 0-0 (0x0-0x0)
   Log Recovering: 0 (0x0)
  GenMax Creation: 00/00/1900 00:00:00
         Shadowed: Yes
       Last Objid: 5603
     Scrub Dbtime: 0 (0x0)
       Scrub Date: 00/00/1900 00:00:00
     Repair Count: 0
      Repair Date: 00/00/1900 00:00:00
 Old Repair Count: 0
  Last Consistent: (0x1899F,8,1F)  09/01/2012 23:49:20
      Last Attach: (0x1455,9,86)  08/15/2012 03:40:39
      Last Detach: (0x1899F,8,1F)  09/01/2012 23:49:20
             Dbid: 1
    Log Signature: Create time:06/28/2012 15:59:19 Rand:1332352 Computer:
       OS Version: (6.1.7601 SP 1 NLS ffffffff.ffffffff)

Previous Full Backup:
        Log Gen: 0-0 (0x0-0x0)
           Mark: (0x0,0,0)
           Mark: 00/00/1900 00:00:00

Previous Incremental Backup:
        Log Gen: 0-0 (0x0-0x0)
           Mark: (0x0,0,0)
           Mark: 00/00/1900 00:00:00

Previous Copy Backup:
        Log Gen: 0-0 (0x0-0x0)
           Mark: (0x0,0,0)
           Mark: 00/00/1900 00:00:00

Previous Differential Backup:
        Log Gen: 0-0 (0x0-0x0)
           Mark: (0x0,0,0)
           Mark: 00/00/1900 00:00:00

Current Full Backup:
        Log Gen: 0-0 (0x0-0x0)
           Mark: (0x0,0,0)
           Mark: 00/00/1900 00:00:00

Current Shadow copy backup:
        Log Gen: 0-0 (0x0-0x0)
           Mark: (0x0,0,0)
           Mark: 00/00/1900 00:00:00

     cpgUpgrade55Format: 0
    cpgUpgradeFreePages: 0
cpgUpgradeSpaceMapPages: 0

       ECC Fix Success Count: none
   Old ECC Fix Success Count: none
         ECC Fix Error Count: none
     Old ECC Fix Error Count: none
    Bad Checksum Error Count: none
Old bad Checksum Error Count: none

  Last checksum finish Date: 00/00/1900 00:00:00
Current checksum start Date: 00/00/1900 00:00:00
      Current checksum page: 0


Operation completed successfully in 0.109 seconds.


what should I do next?

If i was you, i will delete everything from the logs folder, including check point etc and only leave the edb file and then mount it again. That will create the fresh logs and checkpoint files, might sound wierd, but this works. however, this will be the last option.

Also if you have backup, i might suggest you to do the restore from the tape.

amitkulshrestha

the DB space is 350GB and is now 300GB free. The database log files are i na  different partition and is 100GB and is now 90GB free because I deleted the logs accidentally and I cant recover from recycler bin. all the IT users are on that server and no one has access now. I have no previos backup since this is new server. :(

guys on the log folder i dont have anything .. from where fo I need to move the files that you mention rancy? how do i get to those files to move?

I have just one database on this server, this is the mailbox role on this server but I have the CAS role on a different server.

what should I do now?

goodwill1: Simply remove all logs and everything apart from the .edb and mount it and then start with the Backup :)

- Rancy

Any other files in the Log folder or DB folder ?
Where is the .chk .jrs .tmp files ?
Do you have other DB's as mounted ?

- Rancy

Guys can I kiss you?? lol it worked!!!

I rename the folder to old and create new folder with the same name and when to exchange console and mounted the database just fine. when vack to the logs and the new log folder got all the original exchange log files. just now i can access my email and all email is being downloaded to my iphone as well.

I cant thank you enough guys for the fasy response and expertise!!

thanksssssssss

You are welcome :) We both are happy to help you.

You can Hug us for sure .....

I guess both you and Amit will agree with me on the below point

- Rancy

I agree, you should take a backup ASAP. If you don't have any 3rd party tool, just use windows backup. Steps are here
http://www.msexchange.org/articles_tutorials/exchange-server-2010/high-availability-recovery/uncovering-new-exchange-2010-volume-snapshot-vss-plug-in-part1.html

But this would be an Offline backup and if you have Windows 2008 R2 :)
http://www.howexchangeworks.com/2010/07/backing-up-exchange-2010-using-windows.html

- Rancy