How to check Exchange databases status via PowerShell

Run the cmdlet Get-MailboxDatabase to get information about the DB status. Use parameter -Identity to check the status of a single DB and -Server for all DBs in a server.


Check the status of a single DB

Get-MailboxDatabase -Identity DBNAME -Status | Format-Table Name, Mounted, BackupInProgress, OnlineMaintenanceInProgress

Check the status of all DBs in a Server

Get-MailboxDatabase -Server SERVERNAME -Status | Format-Table Name, Mounted, BackupInProgress, OnlineMaintenanceInProgress

* The -Status parameter specifies whether the script will get status information from the DB(s) or not. If not provided, the attributes Mounted, BackupInProgress and OnlineMaintenanceInProgress will return empty.


More info:
Get-MailboxDatabase cmdlet