Database 19 will probably be the hidden snapshot that CheckDB creates.
To be honest, I suspect dropping the table will be about the only solution here, although I'd like to see the rest of the output from that CheckDB first as you left out the important lines.
Can you also try to run
DBCC CheckDB('elmah_error') WITH NO_INFOMSGS, Tablock
Make sure there are no connections to the DB from anywhere first.
p.s. It's not 'Mr'
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability