Friday, May 14, 2010

Exchange is unable to mount the database that you specified,Error code: MapiExceptionBusy,Unable to mount database…

Problem: After dismounting Database and trying to mount it, you receive fallowing error on Clustered mailbox server, Exchange 2007,trying to bring the database online from EMC is not working,


Microsoft Exchange Error


Failed to mount database 'SG15MB1'.




Exchange is unable to mount the database that you specified. Specified database: MailServer1\SG15\SG15MB1; Error code: MapiExceptionBusy: Unable to mount database. (hr=0x8004010b, ec=-2147221237)



  • Open fail over cluster Management
  • Console
  • Click Services and applications
  • Click server name, in the middle pane
  • scroll all the way down “other resources”
  • find the SG shows offline
  • Make a right click and select bring this resource ONLINE


If you are running off single exchange server check to make sure system attendant service is running, you may have to restart this service to get going.

Best regards,
Oz Casey , Dedeal
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +
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peter hobbs said...
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peter hobbs said...

Every upgrade of Exchange server generates Exchange database mounting or dismounting issues. When i had this similar issues then i looked up for a method to convert offline edb to pst file, as it is not possible to mount a corrupted database. Even PowerShell commands fails to work over offline or orphaned mailboxes. i got help from a method to convert offline edb to pst file from that was unable to mounthere (find how to access dismounted database)