Java EE (Java Enterprise Edition) General Discussion

Hi,
I have written a bat file which takes a snapshot of Database and generates a report on changes made as soon as a screen comes up in my Filter Servlet Isay some thing as

Process child = Runtime.getRuntime().exec(my_bat.bat);

but when i execute the screen I get
the following error
java.io.IOException: CreateProcess: my_bat.baterror=2
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Win32Process.java:63)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Runtime.java:566)
at java.lang.Runtime.exec(Runtime.java:428)
at java.lang.Runtime.exec(Runtime.java:364)
at java.lang.Runtime.exec(Runtime.java:326)

Is it because the Tomcat is unable to locate the batch file? if yes where should I place this file. Or is there some Security problem .?
The client and server are running on same machine.