Monday morning brought more that it's fair share of fun to the party. One of my prod. msdb databases failed checkdb. One of the error messages was Extent (1:577040) in database ID 4 is marked allocated in the GAM, but no SGAM or IAM has allocated it. how do I figure out which database object owns or is listed as owning an extent? Mumbling into my Manky Monday Coffee, (H)Alf.