Maintain and backup database for NAV,ERIC and Insys. We encountered a problem on NAV2009 wherein the backup didn't run overnight. Tried checking the maintenance plan but the SQL keeps on hanging. As per checking by John, the CPU usage is reaching the 100% maybe the reason of  the SQL hanging. I also advised Arvin what happened. We restarted the SQL Server then Arvin retriggered the maintenance plan. This is still for monitoring if the backup will run successfully tomorrow and John will schedule the maintenance of the server.