Sometimes, you may find that a database won’t mount. This may be because a required log file is missing or because the database is corrupted. You can diagnose many database mount problems using the Troubleshooting Assistant.
You can use the Troubleshooting Assistant to troubleshoot a database mount problem by completing the following steps:1.
In Exchange Management Console, select the Toolbox node. Double-click Database Recovery Management.2.
After the Troubleshooting Assistant checks for updates, click Go To Welcome Screen.3.
Enter an identifying label for the activity, such as Database Recovery.4.
In the Server Name text box, enter the name of the server on which you want to create the recovery group and the domain controller you want to query during recovery. Then click Next.5.
The Troubleshooting Assistant will check connectivity to Active Directory and Exchange Server. Afterward, the troubleshooter will analyze the Exchange database configuration by checking the disks a server is using for messaging to ensure that they are accessible, have free space, and are mounted.6.
Click Repair Database.7.
On the Select Repair Options page, select the storage group in which the problem database is located, and then click Next.8.
Any dismounted databases in the previously selected storage group are listed and can be selected for troubleshooting.9.
When you’ve selected the database or databases for troubleshooting, click Analyze Selected Database. The database status is provided, along with a possible solution for resolving the problem.