Memory leak issue in CF 10

Hi All,

Can any one pls explan what is memory leak. And how we can find a work around. I am facing this issue while migrating from CF 7 to CF 10.  I have migrated my application from CF7 to CF10. We have an instance and in that we have almost 20 applications running. After Cf10 migration we are getting the below error :  "Error","tomcat-ajp-179","06/23/13","01:03:42","pmt","Java heap space The specific sequence of files included or processed is: /mnt/cfhacontent/[instance-name]/[app_name]/index1.cfm, line: 565 " java.lang.OutOfMemoryError: Java heap space 

Your help is well appreciated.

Thanks.