WSUS 3.0 Database growing to large (Crash in WSUS)

OSQL.exe Standalone

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=15748

How to shrink WSUS 3.X Database with Express Edition

http://gallery.technet.microsoft.com/scriptcenter/6f8cde49-5c52-4abd-9820-f1d270ddea61

sqlcmd –I -S np:\\.\pipe\MSSQL$MICROSOFT##SSEE\sql\query –i <scriptLocation>\WsusDBMaintenance.sql

use the WsusDBMaintenance.sql script from the MS Link.