I'm running an java application from .bat, but it doesn't connect with my database

I'm launching my application from .bat to prevent can open twice. This is my .bat :

@ECHO OFF
tasklist /FI "IMAGENAME eq program.exe" | find "program.exe" > NUL
IF "%ERRORLEVEL%" neq "0" (
program
)

The problem is that when I open the app with this .bat, the app doesn't connect with the Data Base (I'm using SQLite). I don't know where is the problem, when I open the app form .exe, the app works fine.

Thank you.