A database goes offline when someone runs ALTER DATABASE <database name> SET OFFLINE or right clicks the database Tasks -> Set offline. That's a user operation. If you have a database that keeps going offline, speak to your colleagues and find out who's doing it.
A database goes suspect when corruption is encountered during the rollback of a transaction or during the restart recovery process. It means your database is damaged and that you need to find and restore your last good backup.
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass