I am trying to view the code to the professional ColdFusion code, but I get an error for chapter 9 the database. I am running commandBox and I have derby installed, but I get the error - Error Executing Database Query. Timed out trying to establish connection How can fix this error? Thanks in advanced for any help.

Not sure what "professional coldfusion code" is but it sounds like your datasource isnt connecting to your DB successfully. Check it in your CF Admin.

thanks so much for your comment. It's for the Adobe certified professional exam code. I tried to add the datasource in the cf Admin, but I get the error - Connection verification failed for data source: CFTrainingDSN java.sql.SQLException: Timed out trying to establish connection

Well just means it cant make a connection to your sql server wherever that is.

thanks so much for your comment, and your help! It is the Apache derby database and I have no idea where that is on my system.

I have never used Derby, so no clue about the connection config. But I would guess you need to know the port, username, password etc and how to connect to it.