Log File Pattern Matched Line Count when 2 conditions are met

Hi

How can I use 2 pattern matches and then only send alert by using Log File Pattern Matched Line Count

example:

1. I have log called test.log, It logins exceptions, But I am not interested in all thypes exceptions if any exception 

which has exception with DEMOAPP send an alert. I can get this on UNIX with  tail -100f test.log | grep Exception | grep DEMOAPP 

but I have around 10 log files to be tailed which doesn't look feasible

Let me also know if you have other ideas to address this issue.

Thanks in Advance,

Kumar