Besides these file headers, there is another header called 'shadow header' that is identical to main header, lying next to it. As the name suggests, this shadow header safeguards the main header while numerous updates. All the modifications are first made to watch header page prior to main header.
If somehow a crash takes place prior to the modifications like write operations might complete, the primary header still stays undamaged. Shadow header imitates a wind guard to primary header. However some elements can avoid the write operation to be carried out to database files, resulting into an Exchange Server error. To fix the issue, you may need to repair the un-mountable database utilizing ESEUTIL repair utility. You can also opt for safe choice that is to use Exchange Disaster Recovery software.
While installing or using an Exchange database.EDB you may experience the following mistake message saying,
" Unable to compose a shadowed header for the file"
This particular error is marked with event 439 in application occasion log.
Reasons behind this error
The above mistake recommends an access-denied condition. This is since the shadow page is the first header page that is updated. At this moment, the database service stops in order to protect database stability. The Exchange database engine is rejected to compose information to its own.EDB or.CHK files due to one of the possible factors:
The file is in usage by another process. In this case, you normally get -1032 mistake.
The root folder consents have been removed.
The file is read-only. It normally occurs with *. chk files.
The drive can not be accessed because of disk or controller failure.
The root folder of files has actually been either erased or renamed.
You need to check the below pointed out actions so that the error could be avoided.
Examine the application and system log for disk capacity problems and solve them
Restart the Exchange computers
Check for sufficient disks' gain access to
If database is running, move its mail boxes to another server using Move Mailbox command
If the database can not mount, think about among the techniques:
Bring back from backup
Run eseutil/ p and isinteg -fix commands to repair the database Use ExMerge to a brand-new database.
Repair corrupt database.EDB file using Exchange Disaster Recovery tool
One is rest assured if he/she utilizes Exchange disaster recovery program due to the fact that it is qualified enough to handle the above mentioned error.
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