How to Mount and Dismount a Database from Exchange Shell in Exchange Server 2010 

To Mount and Dismount a Database from Exchange Shell in Exchange Server 2010

Run the below command to mount or dismount the database in Exchange Server 2010:-  

To mount the database TrenovisionDB:-

Mount-Database TrenovisionDB

To dismount the database SaledDB:- 

Dismount-Database TrenovisionDB