Thursday, November 15, 2007
Spring, Tomcat and memory
As my application has been growing more and more in functionality, it has also been growing in its memory footprint. To that end, I've started getting OutOfMemoryErrors because the heap has started overflowing. That's really not a problem if you have access to the external Tomcat server, you can just increase the heap size using "-Xms128M -Xmx512M" (or other applicable sizes) on the command line, or do this via the GUI if you're running Tomcat in Windows. However, it's not as obvious if you're using Tomcat for debugging within the Web Tools Platform plugins for Eclipse. I started running into this problem recently and it ground my development to a halt until I was able to fix the problem for WTP in Eclipse. WTP passes its arguments to the Tomcat server via the Launch Configuration. To get to it, right click on the Tomcat server in the Servers view -> 'Open' -> 'Open launch configuration' -> 'Arguments' tab -> 'VM arguments:' text box, then add the "-Xms128M -Xmx512M" segment to the end of the parameter list.