In the ColdFusion administrator, I deleted my application.log file thinking that it would be created again the next time I ran the job. But it's still not there.
Q: How do I turn on the application.log file again, and what's the correct way to clear the records in it?
Ran what job? A scheduled task? That should be a different log file. The correct way to 'clear' logs is to use the rollover button in the admin. It is the one with the multiple pages. It creates a backup. Now - there is a max # of backups (10 I think) - so if you REALLY want to store stuff forever you will need to copy them yourself.
I believe scheduled tasks will not write to application.log. it would write to Scheduler.log.
If the statement specify's CFLOG FILE="XXX.log", then check XXX.log.
Your application.log will be created when you run your application or use cflog log = "Application "
As others have pointed out a regular scheduled task will log to scheduler.log
If you are somehow logging manually to application.log yourself can't you just recreate application.log manually or programmatically?