Increase JVM Free Memory for Apache Tomcat 6

1) Go to $CATALINA_HOME/bin

2) Create a file setenv.sh (in Linux) or setenv.bat (in Windows)

3) Enter the line:

JAVA_OPTS="-Xms256m -Xmx512m -XX:MaxPermSize=256m"

4) Restart the server

5) Go to your Tomcat manager >> Complete Server Status and verify if the memory has increased or not.

This will increase free memory available and avoid having the Out of Memory error.